They come to party at events like Lady Gaga's New Year's Eve poolside concert, where stars including Hayden Panettierre, Kevin Connolly, Chace Crawford, and J.C. Chasez came to help Gaga ring in 2010, and stayed to celebrate at the hotel's LIV nightclub (which has also played host to Christina Aguilera and Kim Kardashian during celebrity stylist Simone Harouche is bachelorette party).