Plus, more star sightings!
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For Hollywood, Super Bowl weekend is one big party, and they don’t disappoint.

On Saturday night, Lil Wayne performed at a GQ, Lacoste and Mercedes-Benz hosted party at the Elms Mansion in New Orleans. Among the fans on hand was model Kate Upton, who posed for photos in front of her GQ cover and stood on a couch to get a better view of Lil Wayne’s show, an onlooker tells PEOPLE.

Even Paul McCartney and wife Nancy Shevell were spotted “rushing through the backstage area to catch the end of his performance,” the source adds.

At Playboy‘s Super Bowl Party presented by Crown Royal, Neil Patrick Harris, Anna Faris and Jeremy Piven mingled in the VIP area.

David Arquette was also in attendance and couldn’t hide his enthusiasm for B.o.B. – jumping on stage during his performance!

Later that night, the Audi Forum kept the party going with deejay sets by Solange Knowles and Diplo. Guests included Modern Family‘s Sofia Vergara, Stacy Keibler, Jeremy Renner, Chace Crawford, Hunger Games‘s Josh Hutcherson, Ashley Greene, Breaking Bad‘s Aaron Paul and more.

Knowles – who was dressed in all white – was overheard talking about how excited she was to see her sister Beyoncé‘s halftime show.

Keibler – who was once a Baltimore Ravens cheerleader – stopped by Vergara’s table to say hello and pose for photos together. Later, Keibler and Paul discovered they had a mutual pal and became fast friends. Meanwhile, Paul was also “excited” to see Crawford, who was having a guys night with Hutcherson, a source says.

– Jennifer Garcia and Patrick Gomez