Oops! This starlet probably had to stop filming her hit show when she managed to strut right out of her shoes on the cobbled streets of NYC.
Wonder if her onscreen boyfriend helped her back into her bright yellow heels?
Think you know which Upper East Side fashionista is missing a pump? Find out after the jump...
It's Leighton Meester, who plays Blair Waldorf on Gossip Girl!
The series returns next week after the longest hiatus ever, but the show's big boss promises it'll be worth the wait.
Will you tune in?
We know they have amazing wardrobes, but what about when they're not shooting? Click through the cast's red-carpet styles in our Fashion Spotlight gallery!