Kate Beckinsale was back in a bikini in Mexico yesterday, after popping up poolside on Wednesday and Thursday as well. She chatted with friends in a black two-piece and ordered lunch from the staff. Kate's daughter Lily is also along for the getaway and lounged in the sun with her mom earlier this week. Kate's just one of many celebrities enjoying Spring vacations, and she's not the only star to travel to Mexico. Molly Sims and her family headed south for the holiday weekend, while Reese Witherspoon recently wrapped up her own Mexican escape with husband Jim Toth.