Heidi Klum, Mariska Hargitay and Katie Couric were among well-heeled guests bidding on designer handbags at the New York Bag Ladies Luncheon at the Plaza on Monday.

Full Picture president and CEO Desiree Gruber was honored at the charity event to fight lupus, which featured an auction with bags up for grabs by Chloé, Yves Saint Laurent and Chanel.

Amid the action, Tim Gunn gave a (dated?) fashion tip, warning that midriffs are “a no” for anywhere but the beach whether you’re “16 or 60.”