Leighton Meester Wears Sweatpants, Uggs on 'Gossip Girl' Set

The Gossip Girl crew spends so much time tottering around in the very tallest heels, it's no wonder the show's stars prefer to stay as comfortable as possible between takes.

On Wednesday, Leighton Meester was photographed in fuschia sweatpants and a pair of UGG boots; A few minutes later, she'd shed the comfortable garments for floral-patterned tights and a pair of ladylike pumps.