diff --git a/src/libs/ReportUtils.ts b/src/libs/ReportUtils.ts
index cf9fcf68a800..6d4997cfe06e 100644
--- a/src/libs/ReportUtils.ts
+++ b/src/libs/ReportUtils.ts
@@ -1910,7 +1910,7 @@ function getWorkspaceIcon(report: OnyxInputOrEntry<Report>, policy?: OnyxInputOr
  * Gets the personal details for a login by looking in the ONYXKEYS.PERSONAL_DETAILS_LIST Onyx key (stored in the local variable, allPersonalDetails). If it doesn't exist in Onyx,
  * then a default object is constructed.
  */
-function getPersonalDetailsForAccountID(accountID: number): Partial<PersonalDetails> {
+function getPersonalDetailsForAccountID(accountID: number, personalDetailsData?: Partial<PersonalDetailsList>): Partial<PersonalDetails> {
     if (!accountID) {
         return {};
     }
@@ -1919,7 +1919,11 @@ function getPersonalDetailsForAccountID(accountID: number): Partial<PersonalDeta
         isOptimisticPersonalDetail: true,
     };
 
-    return allPersonalDetails?.[accountID] ?? defaultDetails;
+    if (!personalDetailsData) {
+        return allPersonalDetails?.[accountID] ?? defaultDetails;
+    }
+
+    return personalDetailsData?.[accountID] ?? defaultDetails;
 }
 
 /**
@@ -1936,12 +1940,18 @@ const phoneNumberCache: Record<string, string> = {};
 /**
  * Get the displayName for a single report participant.
  */
-function getDisplayNameForParticipant(accountID?: number, shouldUseShortForm = false, shouldFallbackToHidden = true, shouldAddCurrentUserPostfix = false): string {
+function getDisplayNameForParticipant(
+    accountID?: number,
+    shouldUseShortForm = false,
+    shouldFallbackToHidden = true,
+    shouldAddCurrentUserPostfix = false,
+    personalDetailsData?: Partial<PersonalDetailsList>,
+): string {
     if (!accountID) {
         return '';
     }
 
-    const personalDetails = getPersonalDetailsOrDefault(allPersonalDetails?.[accountID]);
+    const personalDetails = getPersonalDetailsOrDefault(personalDetailsData?.[accountID] ?? allPersonalDetails?.[accountID]);
     if (!personalDetails) {
         return '';
     }
@@ -3482,7 +3492,12 @@ function getInvoicesChatName(report: OnyxEntry<Report>): string {
 /**
  * Get the title for a report.
  */
-function getReportName(report: OnyxEntry<Report>, policy?: OnyxEntry<Policy>, parentReportActionParam?: OnyxInputOrEntry<ReportAction>): string {
+function getReportName(
+    report: OnyxEntry<Report>,
+    policy?: OnyxEntry<Policy>,
+    parentReportActionParam?: OnyxInputOrEntry<ReportAction>,
+    personalDetails?: Partial<PersonalDetailsList>,
+): string {
     let formattedName: string | undefined;
     const parentReportAction = parentReportActionParam ?? ReportActionsUtils.getParentReportAction(report);
     const parentReportActionMessage = ReportActionsUtils.getReportActionMessage(parentReportAction);
@@ -3566,7 +3581,7 @@ function getReportName(report: OnyxEntry<Report>, policy?: OnyxEntry<Policy>, pa
     }
 
     if (isSelfDM(report)) {
-        formattedName = getDisplayNameForParticipant(currentUserAccountID, undefined, undefined, true);
+        formattedName = getDisplayNameForParticipant(currentUserAccountID, undefined, undefined, true, personalDetails);
     }
 
     if (isInvoiceRoom(report)) {
@@ -3586,7 +3601,7 @@ function getReportName(report: OnyxEntry<Report>, policy?: OnyxEntry<Policy>, pa
         }
     });
     const isMultipleParticipantReport = participantsWithoutCurrentUser.length > 1;
-    return participantsWithoutCurrentUser.map((accountID) => getDisplayNameForParticipant(accountID, isMultipleParticipantReport)).join(', ');
+    return participantsWithoutCurrentUser.map((accountID) => getDisplayNameForParticipant(accountID, isMultipleParticipantReport, true, false, personalDetails)).join(', ');
 }
 
 /**
diff --git a/src/pages/home/HeaderView.tsx b/src/pages/home/HeaderView.tsx
index cd372e0bd33b..626da27e22da 100644
--- a/src/pages/home/HeaderView.tsx
+++ b/src/pages/home/HeaderView.tsx
@@ -82,7 +82,7 @@ function HeaderView({report, personalDetails, parentReport, parentReportAction,
     const isTaskReport = ReportUtils.isTaskReport(report);
     const reportHeaderData = !isTaskReport && !isChatThread && report.parentReportID ? parentReport : report;
     // Use sorted display names for the title for group chats on native small screen widths
-    const title = ReportUtils.getReportName(reportHeaderData, undefined, parentReportAction);
+    const title = ReportUtils.getReportName(reportHeaderData, undefined, parentReportAction, personalDetails);
     const subtitle = ReportUtils.getChatRoomSubtitle(reportHeaderData);
     const parentNavigationSubtitleData = ReportUtils.getParentNavigationSubtitle(reportHeaderData);
     const reportDescription = ReportUtils.getReportDescriptionText(report);