Give your best wishes to Whitney Port all you'd like, but don't forget to congratulate her later, too.
Reason being? The Hills alum is not married to Tim Rosenman quite yet—although we totally see how you could be confused! The bride-to-be Instagrammed a photo Sunday of herself wearing a white dress (!) with the caption "Mrs. Rosenman." This led to a lot of speculation saying she'd already tied the knot, but a source tells E! News this picture was from Whitney's bridal shower...That's right, the future Mrs. Rosenman was celebrating her upcoming "I do's," but the big day itself hasn't taken place just yet.