“Gossip Girl” star Blake Lively is lucky enough to wear some jaw-droppingly fabulous designer duds on the set, and it looks like she likes to take some of her work home with her. The starlet chose a very au courant Chloe Saskia purse to jazz up an otherwise basic (okay, kinda drab and very short; guess those “Traveling Pants” must be with America Ferrera or something) beige dress. Dog-sitting isn’t the most glamorous chore in the world, but the Saskia, with its chic pastel patches of croc, adds a fashionable, just-off-the-runway panache. Serena would definitely approve.