James Wilkie Broderick was ready for school with his backpack as Sarah Jessica Parker led him through the streets of NYC yesterday. She joined the ranks of other stylish celebs with her pegged jeans, but made a statement with her vest that was all her own. Pinned to SJP's denim vest was a sign that read "Barack n Roll." We've seen lots of stars endorsing Obama with t-shirts, but leave it to Sarah Jessica to find an original way to show her support through both fashion and fundraising.