Avril Lavigne. Although I thought she over-wore the tie a bit...
Gaga in her 'costume' complete with USA flag tie at the gay pride rally. Add awkwardly-huge glasses, and you're ready for Capitol Hill. (At least she didn't wear a button-up and no pants again.)
Brooklyn Decker for Ralph Lauren in his ladies' 3-piece suit. I love her.
Annie Lennox cerca the Eurythmics. Here she's thinking, "This tie so matches my eyes".