Yes, that is Petra Nemcova kissing Eva Mendes at the Happy Hearts Fund Gala recently. Petra and Eva stopped for a little photo session on the red carpet and had a little fun with it. Not sure if all female attendees had to wear white or maybe they just got together before hand with a memo. Either way, their party got crashed. 

From out of nowhere, that hound of a male celebrity known as Bruce Willis manages to find himself in a Petra Nemcova and Eva Mendes sandwich.