Photos: President Obama, Wife & Daughters Step Out in Grand Style for Chef's wedding

All dressed up in black outfit, the United States First Family jetted off to Westchester, New York yesterday, to celebrate the wedding of their longtime family chef, Sam Kass to MSNBC host Alex Wagner.

Kass happened to be the family chef for the Obamas while they were still living in Chicago before Obama became president in 2009. Check out more photos after the cut…