The actors, who split in January after dating for two years, both attended the gala but did not even come close to bumping into each other on Monday night's red carpet, however, walking the celebrity packed stretch at different times.
Jennifer wore a black embellished 1950s inspired strapless Christian Dior dress with Brian Atwood shoes and a Jennifer Behr headpiece which featured a mini netted veil. Nick put his own spin on the classic tuxedo wearing traditional tux trousers, shirt and bow tie but with a vibrant purple jacket with a light purple pocket square.
The pair originally met on the set of X-Men: First Class and now the former couple are back working on the newest X-Men installment.They were recently spotted enjoying a dinner date in Los Angeles.
Jen on her dress: "(Me and Dior Creative Director Raf Simons) went out for lunch, and we started talking about dresses. And he told me I should wear this one. I said 'okay', and then I wore it."
Jen on whether she had a punk phase: "No, I didn’t have a punk phase. I’m supposed to say yes but, no. I was a cheerleader."