Jessica Simpson & Justin Timberlake Put On LA Shows

Justin Timberlake and Jessica Simpson have new CD?s on the horizon and a lot at stake.

Jessica had a very un-?Public Affair!? Jessica held a super-secret concert at the predominantly gay club ? ?The Factory? ? Friday night in West Hollywood.

The belted jumper-clad Simpson shimmied and shook while she sang three songs from her new album before finishing with ?Amazing Grace.?

And Jess is now asking her fans to pick out her next single! Choices include a poppy remake of ?You Spin Me Round,? a song called ?I Don?t Want To Care? and ?I Belong To Me.?

And Justin brought sexy back in both Las Vegas and Hollywood, where Access Hollywood?s Maria Menounos caught the show alongside — ironically enough ? Jess? dad, Joe Simpson. ¤8 ]]

Also attending Justin?s jam were Kate Bosworth, Ellen Degeneres and Portia DeRossi and Lance Bass with his boyfriend,Reichen Lehmkuhl.

Lance and Reichen also stepped out to support Jamie Pressly and her ?Adopt-A-School Initiative.?

But back to J.T., who killed it! Variety said: ?This show is a revelation? and compares Justin to Michael Jackson and James Brown, while the Los Angeles Times calls him the ?most graceful of pop stars.?

Not surprisingly, Cameron Diaz caught her man?s show but also found time to take her pooch for a Vegas stroll.

And as the ?are they or aren?t they engaged? debate swirls, Vince Vaughn brought the funny to Vegas with his ?Wild West Comedy Show? at Mandalay Bay with no Jennifer Aniston in sight.

As Jen?s dogs escaped the Hollywood hype with a relaxing walk on a Malibu beach.