Tanya could be my favorite model.  She walked the Tibi show in New York, and gave all us photographers a sexy left-right-over-the-shoulder-look turn.  
We then started cat-calling her at that point, and the crowd started laughing, and eventually Tanya broke out in a smile as well.  She closed the show all smiles.
Happiest moment in all of fashion week (after Betsey Johnson's presentation, of course..)