Kristen Stewart could not have looked any more beautiful when she arrived at the annual Thirst Gala in Beverly Hills on Monday night. The actress — who recently returned from the South of France — turned heads in a sexy lace Preen dress and was all smiles as she posed for photos with Governor's Award recipient Catherine Hardwicke and Thirst Project CEO Seth Maxwell. The annual event — which raises funds to provide safe water sources in developing nations — also brought out Lance Bass, who took to Instagram to share a photo of him and Kristen, writing, "With #KristenStewart at the #ThirstGala for @ThirstProject -honouring amazing people fighting the world's #WaterCrisis." While the actress attended the fete solo, she was seen holding hands with ex-girlfriend Alicia Cargile just last month. Keep reading for more of Kristen, then look back at all the people she's dated.