Jennifer Lawrence jokes she is like "an old woman".The 'Silver Linings Playbook' star may have seen a huge amount of success for her role as Tiffany Maxwell in the rom-com drama, but she has claimed she's more comfortable in her home than the dazzling lights of Hollywood.She told TV Movie magazine: "I act like an old woman; I'm in bed by 11pm at the latest. I prefer that to hanging around Hollywood parties at night."Jennifer - whose performance in the film earned her the Best Actress award at the Oscars last month - is keen to stay grounded and refuses to flaunt her wealth.She added: "I still live in the same three-bedroom apartment I had when I moved to LA six years ago."I still look for bargains in the supermarket. When I go somewhere these days I let a valet park my car. That costs $6!"The 22-year-old actress explained her feelings on "fame" come from the belief she isn't any different to "other people" just because of her success.She said: "Fame or being famous has never impressed me. Just because you're getting recognised by other people doesn't mean you've become anything special."