LOS ANGELES (AP) -- Jay-Z laughed it up with Will Smith; Beyonce stood close to sister Solange in a DJ booth; and Charlize Theron made a late entrance.

It was an ultra-exclusive affair on Saturday as Jay-Z's RocNation and Gucci threw a pre-Grammy brunch for guests including Rihanna, Adrian Brody and Ryan Phillippe at the Soho House West, where the emphasis was on mingling and grooving to the beat.

Solange was one of the celebrity DJs at the event, entertaining the crowd while Beyonce and Solange's young son looked on.

Best new artist nominee Florence Welch of Florence + the Machine was greeted by admirers when she walked in.

Welch says she's excited about the Grammy week festivities.

Jay-Z is up for six awards at Sunday's Grammys.