diff --git a/packages/fluentui/CHANGELOG.md b/packages/fluentui/CHANGELOG.md
index 2bda8c3131e1e5..c7b17a88e33ccf 100644
--- a/packages/fluentui/CHANGELOG.md
+++ b/packages/fluentui/CHANGELOG.md
@@ -21,6 +21,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Features
 
 - Add a new comfy layout variation for `ChatMessage` @davezuko ([#23974](https://github.com/microsoft/fluentui/pull/23974))
+- Add new style to v0 Tooltip to match v9 Tooltip @GianoglioEnrico ([#24908](https://github.com/microsoft/fluentui/pull/24908))
 
 ### Fixes
 - Allow React 17 in `peerDependencies` of all packages and bump react-is to 17 @TristanWatanabe ([#24356](https://github.com/microsoft/fluentui/pull/24356))
diff --git a/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentStyles.ts b/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentStyles.ts
index 73a30b883348a6..e400b34bbb0645 100644
--- a/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentStyles.ts
+++ b/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentStyles.ts
@@ -51,7 +51,7 @@ export const tooltipContentStyles: ComponentSlotStylesPrepared<TooltipContentSty
     fontSize: pxToRem(12),
     padding: v.padding,
     textAlign: 'left',
-
+    lineHeight: pxToRem(16),
     color: v.color,
     background: v.backgroundColor,
     borderRadius: v.borderRadius,
diff --git a/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentVariables.ts b/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentVariables.ts
index 0b58e1fd7a78bd..bd63e6cd9d7c77 100644
--- a/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentVariables.ts
+++ b/packages/fluentui/react-northstar/src/themes/teams/components/Tooltip/tooltipContentVariables.ts
@@ -32,11 +32,11 @@ export const tooltipContentVariables = (siteVars: any): TooltipContentVariables
 
   borderRadius: siteVars.borderRadiusMedium,
   borderColor: 'transparent',
-  borderSize: '1px',
+  borderSize: '0px',
   borderStyle: 'none',
   padding: `${pxToRem(5)} ${pxToRem(12)} ${pxToRem(7)} ${pxToRem(12)}`,
 
-  maxWidth: pxToRem(246),
+  maxWidth: pxToRem(240),
 
   svgPointer: true,
   pointerMargin: pxToRem(6),