Mary-Kate & Ashley Olsen at Bungalow 8

After attending the Costume Institute Gala this Monday night, Mary-Kate and Ashley Olsen hit the after-party at Bungalow 8, one of their favorite New York City nightspots. Ashley’s boyfriend Justin Bartha joined the girls there too.

Ashley and Justin didn’t change from their Gala wear. I hope Ash took good care of her pristine white dress! Can you imagine going to a nightclub wearing that? I sure can’t!

Mary-Kate changed out of her vintage LaCroix dress. I don’t blame her. While the dress was beautiful, I’m sure it’s not the best thing to be wearing for a fun night out!

MK and Ashley have both been spotted out and about in NYC this week. I don’t have access to them, but you can see MK running errands in Soho here and Ashley hitting the gym near her apartment here.

Images: Splash News Online