05/18/2012 AT 6:00 AM ET
Casually clad in a flowy white tank and leopard-print Louboutin heels, the Modern Family star, danced on chairs at the hotspot with her fellow partygoers, when security and staff reprimanded the group for “safety reasons,” an onlooker tells PEOPLE.
When the women were asked to get off the chairs, Vergara comically replied, “We are not from America. We won’t sue. It’s not in our vocabulary.”
– Carlos Greer