Five ways to ring in the New Year in Tinseltown.

1. Katy Perry performs at the Gridlock NYE party 2009 at Paramount Studios. $100-$200. 2. The Standard is hosting two "Gold 009" parties, one poolside and one in the Purple Lounge. There will be live music, dancing, DJs, and plenty of champagne. $25 for the poolside party, $40 for the Purple Lounge. 3. The Kress is hosting a party from 9 p.m. to 3 a.m., with an open bar and three floors of dancing. $125.

4. Stone Rose Lounge is throwing a party that includes a prix fixe dinner, DJs, and magnums of Moet. $200. 5. The SkyBar at the Mondrian is hosting a Venetian-inspired masquerade ball on NYE, complete with be-masqued models serving drinks, and a Bebe fashion show. $500 and up.