05/16/2012 at 06:00 AM EDT
Days after celebrating their twins' birthdays
– in Paris, Mariah Carey
and Nick Cannon
arrived hand-in-hand at the Opera Gallery in N.Y.C. for an arty fundraiser.
The pair was spotted laughing and enjoying themselves, sipping soft drinks and checking out tunes by DJ Mos at the event, which benefitted the Urban Arts Partnership. The happy couple – who recently renewed their vows
– was apparently in a very
charitable mood: Cannon placed the night's highest bid, nabbing a $21,000 Project Canvas shoe, that was paired with a diver watch, designed by Audemars Piguet.
Carey was among the celebrities who designed shoes for the event. Her creation, which was snatched up by BET chairman Debra Lee
for $2,000, earned the highest price for a single pair of shoes during the evening.
Other celebrities contributing shoe designs at the event: Ellen DeGeneres
and Swizz Beatz
. – Carlos Greer