Ashley Greene Works Up A Sweat [PHOTOS]

Ashley Greene worked up a serious sweat at the Tracey Anderson Studio in Studio City, California today.  Earlier this week, Greene attended the CFDA Fashion Awards in New York City.  It was reported that she and Gerard Butler engaged in a mild flirtation of sorts at the after party.  The Twilight actress wowed in a hot pink mini by Michael Kors, with whom she posed for pics on the red carpet.

PHOTOS: Stars Step Out For The CFDA Fashion Awards

The first official trailer for The Twilight Saga: Breaking Dawn Part I premiered Sunday night at the 2011 MTV Movie Awards.  We can’t wait to see Greene return as pixie vampire Alice Cullen.