Hilary Duff Gets Gossip Girl Giddy

Hilary Duff walks around in a hip-hugging peach and yellow Herve Leger dress on the set of Gossip Girl at the National Arts Club in Gramercy Park on Tuesday (August 25).

The 21-year-old Cheaper by the Dozen actress took a break from her busy schedule by stopping off at the Britney Spears concert in New York City on Monday night.

10+ pictures inside of Hilary Duff getting Gossip Girl giddy…