I don't really know, but I read a lot of gossip sites and from what I heard all the celebs go to Hyde, LAX, Mood, The Tropicana Bar inside the Roosevelt Hotel.
I always see tabloid pics of Paris Hilton and tons of other celebs like Justin Timberlake going there. I have no idea about getting in.
You should probably read this.
http://losangeles.citysearch.com/pro...es_ca/lax.html
For example, that club has 10 reviews, you can read what people say about getting in. Btw, Nicole Richie's on and off again boyfriend DJ AM dj's there.
And then read about more clubs on Sunset, and Hollywood.
Or some others I drove by is the Standard Hotel. I heard some celebs go there too.