Joe Jonas, other celebs pop up at Lollapalooza

Chicago was beaming with star power last weekend as everyone from Joe Jonas to Mark Salling of "Glee" popped up for the Lollapalooza music fest.

On Saturday, Jonas brunched at HUB 51, where he spent time prepping his set list for a surprise performance at Rolling Stone's Lollapalooza party at Studio Paris.

"Gossip Girl" star Ed Westwick was spotted dining at Bill and Giuliana Rancic's restaurant, RPM Italian, on Friday, and then headed to Studio Paris, where he took the stage for a freestyle session with DJ Martin Garrix.

"90210" star Jennie Garth also had brunch at HUB 51 Saturday before heading off to Lollapalooza.

That night, Jonas and Salling stopped by the tiki bar Three Dots and a Dash. Siblings Danny, Chris and Alanna Masterson were also on hand to try some tropical concoctions.

Carey's pampered twins

Mariah Carey is ignoring the rumors that she might be splitting from hubby Nick Cannon, and is instead focusing on 3-year-old twins Monroe and Moroccan. On Monday, Carey posted a photo of the twins dipping their feet in a pedicure bath.

"Roc&Roe having an early @ButterflyDrink party!" the picture is captioned. It definitely must have been early as Mariah suggested, because the twins were still wearing their pajamas.

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