diff --git a/ghost/admin-x-settings/src/admin-x-ds/global/PreviewModal.tsx b/ghost/admin-x-settings/src/admin-x-ds/global/PreviewModal.tsx
index dbd15d28c8..6f3d07b53e 100644
--- a/ghost/admin-x-settings/src/admin-x-ds/global/PreviewModal.tsx
+++ b/ghost/admin-x-settings/src/admin-x-ds/global/PreviewModal.tsx
@@ -20,6 +20,7 @@ export interface PreviewModalProps {
     buttonsDisabled?: boolean
     previewToolbar?: boolean;
     previewToolbarURLs?: SelectOption[];
+    selectedURL?: string;
     sidebarButtons?: React.ReactNode;
     sidebarHeader?: React.ReactNode;
     sidebarPadding?: boolean;
@@ -39,8 +40,9 @@ export const PreviewModalContent: React.FC<PreviewModalProps> = ({
     cancelLabel = 'Cancel',
     okLabel = 'OK',
     okColor = 'black',
-    previewToolbarURLs,
     previewToolbar = true,
+    previewToolbarURLs,
+    selectedURL,
     buttonsDisabled,
     sidebarButtons,
     sidebarHeader,
@@ -69,7 +71,7 @@ export const PreviewModalContent: React.FC<PreviewModalProps> = ({
         let toolbarCenter = (<></>);
         if (previewToolbarURLs) {
             toolbarCenter = (
-                <URLSelect options={previewToolbarURLs!} onSelect={onSelectURL ? onSelectURL : () => {}} />
+                <URLSelect defaultSelectedOption={selectedURL} options={previewToolbarURLs!} onSelect={onSelectURL ? onSelectURL : () => {}} />
             );
         }
 
diff --git a/ghost/admin-x-settings/src/admin-x-ds/global/Select.tsx b/ghost/admin-x-settings/src/admin-x-ds/global/Select.tsx
index 9c28b1b89e..c7872058a5 100644
--- a/ghost/admin-x-settings/src/admin-x-ds/global/Select.tsx
+++ b/ghost/admin-x-settings/src/admin-x-ds/global/Select.tsx
@@ -9,7 +9,7 @@ export interface SelectOption {
     label: string;
 }
 
-interface SelectProps {
+export interface SelectProps {
     title?: string;
     prompt?: string;
     options: SelectOption[];
diff --git a/ghost/admin-x-settings/src/admin-x-ds/global/TabView.tsx b/ghost/admin-x-settings/src/admin-x-ds/global/TabView.tsx
index 4bbfad792c..edc3220639 100644
--- a/ghost/admin-x-settings/src/admin-x-ds/global/TabView.tsx
+++ b/ghost/admin-x-settings/src/admin-x-ds/global/TabView.tsx
@@ -9,10 +9,11 @@ export type Tab = {
 
 interface TabViewProps {
     tabs: Tab[];
+    onTabChange?: (id: string) => void;
     defaultSelected?: string;
 }
 
-const TabView: React.FC<TabViewProps> = ({tabs, defaultSelected}) => {
+const TabView: React.FC<TabViewProps> = ({tabs, onTabChange, defaultSelected}) => {
     if (tabs.length !== 0 && defaultSelected === undefined) {
         defaultSelected = tabs[0].id;
     }
@@ -26,6 +27,7 @@ const TabView: React.FC<TabViewProps> = ({tabs, defaultSelected}) => {
     const handleTabChange = (e: React.MouseEvent<HTMLButtonElement>) => {
         const newTab = e.currentTarget.id;
         setSelectedTab(newTab);
+        onTabChange?.(newTab);
     };
 
     return (
diff --git a/ghost/admin-x-settings/src/admin-x-ds/global/URLSelect.tsx b/ghost/admin-x-settings/src/admin-x-ds/global/URLSelect.tsx
index f774926554..bf9451e068 100644
--- a/ghost/admin-x-settings/src/admin-x-ds/global/URLSelect.tsx
+++ b/ghost/admin-x-settings/src/admin-x-ds/global/URLSelect.tsx
@@ -1,13 +1,8 @@
 import React from 'react';
-import Select, {SelectOption} from './Select';
+import Select, {SelectProps} from './Select';
 import clsx from 'clsx';
 
-interface URLSelectProps {
-    options: SelectOption[];
-    onSelect: (value: string) => void;
-}
-
-const URLSelect: React.FC<URLSelectProps> = ({options, onSelect}) => {
+const URLSelect: React.FC<SelectProps> = (props) => {
     const selectClasses = clsx(
         `!h-[unset] w-full appearance-none rounded-full border border-grey-100 bg-white px-3 py-1 text-sm`
     );
@@ -20,12 +15,11 @@ const URLSelect: React.FC<URLSelectProps> = ({options, onSelect}) => {
     return (
         <Select
             containerClassName={containerClasses}
-            options={options}
             selectClassName={selectClasses}
             unstyled={true}
-            onSelect={onSelect}
+            {...props}
         />
     );
 };
 
-export default URLSelect;
\ No newline at end of file
+export default URLSelect;
diff --git a/ghost/admin-x-settings/src/components/settings/site/DesignModal.tsx b/ghost/admin-x-settings/src/components/settings/site/DesignModal.tsx
index c945931efa..13d2e73434 100644
--- a/ghost/admin-x-settings/src/components/settings/site/DesignModal.tsx
+++ b/ghost/admin-x-settings/src/components/settings/site/DesignModal.tsx
@@ -4,10 +4,10 @@ import NiceModal, {useModal} from '@ebay/nice-modal-react';
 import React, {useContext, useEffect, useState} from 'react';
 import StickyFooter from '../../../admin-x-ds/global/StickyFooter';
 import TabView, {Tab} from '../../../admin-x-ds/global/TabView';
-import ThemePreview from './designAndBranding/ThemePreivew';
+import ThemePreview from './designAndBranding/ThemePreview';
 import ThemeSettings from './designAndBranding/ThemeSettings';
 import useForm from '../../../hooks/useForm';
-import {CustomThemeSetting, Setting, SettingValue} from '../../../types/api';
+import {CustomThemeSetting, Post, Setting, SettingValue, SiteData} from '../../../types/api';
 import {PreviewModalContent} from '../../../admin-x-ds/global/PreviewModal';
 import {SelectOption} from '../../../admin-x-ds/global/Select';
 import {ServicesContext} from '../../providers/ServiceProvider';
@@ -19,7 +19,8 @@ const Sidebar: React.FC<{
     updateBrandSetting: (key: string, value: SettingValue) => void
     themeSettingSections: Array<{id: string, title: string, settings: CustomThemeSetting[]}>
     updateThemeSetting: (updated: CustomThemeSetting) => void
-}> = ({brandSettings,updateBrandSetting,themeSettingSections,updateThemeSetting}) => {
+    onTabChange: (id: string) => void
+}> = ({brandSettings,updateBrandSetting,themeSettingSections,updateThemeSetting,onTabChange}) => {
     const tabs: Tab[] = [
         {
             id: 'brand',
@@ -36,7 +37,7 @@ const Sidebar: React.FC<{
     return (
         <>
             <div className='p-7'>
-                <TabView tabs={tabs} />
+                <TabView tabs={tabs} onTabChange={onTabChange} />
             </div>
             <StickyFooter>
                 <button className='flex w-full cursor-pointer flex-col px-7' type='button' onClick={() => {}}>
@@ -48,11 +49,21 @@ const Sidebar: React.FC<{
     );
 };
 
+function getHomepageUrl(siteData: SiteData): string {
+    const url = new URL(siteData.url);
+    const subdir = url.pathname.endsWith('/') ? url.pathname : `${url.pathname}/`;
+
+    return `${url.origin}${subdir}`;
+}
+
 const DesignModal: React.FC = () => {
     const modal = useModal();
 
     const {api} = useContext(ServicesContext);
+    const {settings, siteData, saveSettings} = useContext(SettingsContext);
     const [themeSettings, setThemeSettings] = useState<Array<CustomThemeSetting>>([]);
+    const [latestPost, setLatestPost] = useState<Post | null>(null);
+    const [selectedUrl, setSelectedUrl] = useState(getHomepageUrl(siteData!));
 
     useEffect(() => {
         api.customThemeSettings.browse().then((response) => {
@@ -60,7 +71,11 @@ const DesignModal: React.FC = () => {
         });
     }, [api]);
 
-    const {settings, saveSettings} = useContext(SettingsContext);
+    useEffect(() => {
+        api.latestPost.browse().then((response) => {
+            setLatestPost(response.posts[0]);
+        });
+    }, [api]);
 
     const {
         formState,
@@ -116,12 +131,20 @@ const DesignModal: React.FC = () => {
     }));
 
     const urlOptions: SelectOption[] = [
-        {value: 'homepage', label: 'Homepage'},
-        {value: 'post', label: 'Post'}
-    ];
+        {value: getHomepageUrl(siteData!), label: 'Homepage'},
+        latestPost && {value: latestPost.url, label: 'Post'}
+    ].filter((option): option is SelectOption => Boolean(option));
 
     const onSelectURL = (url: string) => {
-        alert(url);
+        setSelectedUrl(url);
+    };
+
+    const onTabChange = (id: string) => {
+        if (id === 'post' && latestPost) {
+            setSelectedUrl(latestPost.url);
+        } else {
+            setSelectedUrl(getHomepageUrl(siteData!));
+        }
     };
 
     return <PreviewModalContent
@@ -138,14 +161,17 @@ const DesignModal: React.FC = () => {
                     coverImage,
                     themeSettings
                 }}
+                url={selectedUrl}
             />
         }
         previewToolbarURLs={urlOptions}
+        selectedURL={selectedUrl}
         sidebar={<Sidebar
             brandSettings={{description, accentColor, icon, logo, coverImage}}
             themeSettingSections={themeSettingSections}
             updateBrandSetting={updateBrandSetting}
             updateThemeSetting={updateThemeSetting}
+            onTabChange={onTabChange}
         />}
         sidebarPadding={false}
         testId='design-modal'
diff --git a/ghost/admin-x-settings/src/components/settings/site/designAndBranding/ThemePreivew.tsx b/ghost/admin-x-settings/src/components/settings/site/designAndBranding/ThemePreview.tsx
similarity index 83%
rename from ghost/admin-x-settings/src/components/settings/site/designAndBranding/ThemePreivew.tsx
rename to ghost/admin-x-settings/src/components/settings/site/designAndBranding/ThemePreview.tsx
index 05fd3afe13..b81efe82b7 100644
--- a/ghost/admin-x-settings/src/components/settings/site/designAndBranding/ThemePreivew.tsx
+++ b/ghost/admin-x-settings/src/components/settings/site/designAndBranding/ThemePreview.tsx
@@ -1,5 +1,4 @@
 import React, {useEffect, useRef} from 'react';
-import useSettingGroup from '../../../../hooks/useSettingGroup';
 import {CustomThemeSetting} from '../../../../types/api';
 
 type BrandSettings = {
@@ -13,17 +12,7 @@ type BrandSettings = {
 
 interface ThemePreviewProps {
     settings: BrandSettings
-}
-
-function getApiUrl({siteUrl, path = ''}: {
-    siteUrl: string;
-    path?: string;
-}): string {
-    const url = new URL(siteUrl);
-    const subdir = url.pathname.endsWith('/') ? url.pathname : `${url.pathname}/`;
-    const fullPath = `${subdir}${path.replace(/^\//, '')}`;
-
-    return `${url.origin}${fullPath}`;
+    url: string
 }
 
 function getPreviewData({
@@ -58,20 +47,16 @@ function getPreviewData({
     return params.toString();
 }
 
-const ThemePreview: React.FC<ThemePreviewProps> = ({settings}) => {
+const ThemePreview: React.FC<ThemePreviewProps> = ({settings,url}) => {
     const iframeRef = useRef<HTMLIFrameElement>(null);
-    const {siteData} = useSettingGroup();
-    const apiEndpoint = getApiUrl({
-        siteUrl: siteData?.url || '',
-        path: ''
-    });
+
     useEffect(() => {
-        if (!apiEndpoint) {
+        if (!url) {
             return;
         }
 
         // Fetch theme preview HTML
-        fetch(apiEndpoint, {
+        fetch(url, {
             method: 'POST',
             headers: {
                 'Content-Type': 'text/html;charset=utf-8',
@@ -111,7 +96,7 @@ const ThemePreview: React.FC<ThemePreviewProps> = ({settings}) => {
             .catch(() => {
                 // handle error in fetching data
             });
-    }, [apiEndpoint, settings]);
+    }, [url, settings]);
     return (
         <>
             <iframe
diff --git a/ghost/admin-x-settings/src/types/api.ts b/ghost/admin-x-settings/src/types/api.ts
index f3ab413b2c..c3479843dc 100644
--- a/ghost/admin-x-settings/src/types/api.ts
+++ b/ghost/admin-x-settings/src/types/api.ts
@@ -56,6 +56,11 @@ export type SiteData = {
     version: string;
 };
 
+export type Post = {
+    id: string;
+    url: string;
+};
+
 type CustomThemeSettingData =
     { type: 'text', value: string | null, default: string | null } |
     { type: 'color', value: string, default: string } |
diff --git a/ghost/admin-x-settings/src/utils/api.ts b/ghost/admin-x-settings/src/utils/api.ts
index 1e70b17c1f..cae3d1628f 100644
--- a/ghost/admin-x-settings/src/utils/api.ts
+++ b/ghost/admin-x-settings/src/utils/api.ts
@@ -1,4 +1,4 @@
-import {CustomThemeSetting, Setting, SiteData, User, UserRole} from '../types/api';
+import {CustomThemeSetting, Post, Setting, SiteData, User, UserRole} from '../types/api';
 import {getGhostPaths} from './helpers';
 
 interface Meta {
@@ -53,6 +53,20 @@ export interface CustomThemeSettingsResponseType {
     custom_theme_settings: CustomThemeSetting[];
 }
 
+export interface PostsResponseType {
+    meta: {
+        pagination: {
+            page: number
+            limit: number
+            pages: number
+            total: number
+            next: number | null
+            prev: number | null
+        }
+    }
+    posts: Post[];
+}
+
 export interface SiteResponseType {
     site: SiteData;
 }
@@ -127,6 +141,9 @@ interface API {
     customThemeSettings: {
         browse: () => Promise<CustomThemeSettingsResponseType>
         edit: (newSettings: CustomThemeSetting[]) => Promise<CustomThemeSettingsResponseType>
+    };
+    latestPost: {
+        browse: () => Promise<PostsResponseType>
     }
 }
 
@@ -325,6 +342,13 @@ function setupGhostApi({ghostVersion}: GhostApiOptions): API {
                 const data: CustomThemeSettingsResponseType = await response.json();
                 return data;
             }
+        },
+        latestPost: {
+            browse: async () => {
+                const response = await fetcher('/posts/?filter=status%3Apublished&order=published_at%20DESC&limit=1&fields=id,url');
+                const data: PostsResponseType = await response.json();
+                return data;
+            }
         }
     };