As the face of Madonna and daughter Lourdes’ fashion line, Material Girl, Kelly Osbourne joined Lourdes Leon for a party, held at Macy’s department store in New York City to celebrate the fashion lines 1st birthday.  The party included a runway show and an appearance by Madonna herself.

Madonna left the hosting duties to Kelly and 14 year old Lourdes.  While the line launched last year, Kelly took over the spokes model job in February, after Gossip Girl actress Taylor Momsen, 18, proved slightly too edgy for the line.

While taking a seat at the show, Osbourne gave fans a view of her underwear. I’m not sure what it is with celebrities getting caught with their undies showing.   Perhaps a lesson on how to sit down without flashing people is in order?