Katy Perry Steps Out in Las Vegas

Markus Molinari and Katy Perry


01/28/2012 AT 10:40 AM ET

Back in the United States to see friends and support a charity, Katy Perry strolled down a red carpet for the first time since her split with Russell Brand.

The singer rocked her blue hair and donned a cocktail dress with metal studs at the overnight Friday event for Givelove.org, which provides sustainable low-income solutions Haiti earthquake victims.

Markus Molinari, a designer for J. Molinari Jewelry, told PEOPLE that Perry was doing “amazing” and she was in town to support his cause because “that’s what friends do.”


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