Jennifer Garner  and Katie Holmes joined forces this afternoon at Variety's Power of Women Luncheon in LA. Katie's in California after her recent trip to Prague , where her husband, Tom Cruise , is filming Mission Impossible 4 . Both actresses attended today's event to bring attention to their particular philanthropic  missions — Katie was there on behalf of her arts education organization Dizzy Feet Foundation , and Jen went with a representative of a group close to her heart , Save the Children. Diane Lane  also turned out, bringing a guy into the mostly female mix by posing with her Wall Street: Money Never Sleeps  star husband, Josh Brolin . Anne Hathaway  and Eva Mendes , meanwhile, rounded out the star-studded list of attendees at the meal.