The Best Actress nominee changed out of her red carpet outfit and into a tracksuit for the after party, and honestly, it’s a mood. Was anyone at the Oscars having more fun than Melissa McCarthy?

McCarthy wore a custom Christian Siriano hot pink jumpsuit with a multitiered ruffled cloak Melissa McCarthy made ... we just have a blast creating fun fashion moments!!" he wrote.

Melissa McCarthy chats with ET's Nischelle Turner ... Naomi Watts, Usher, Justin Theroux and more celebs kicked off New York Fashion Week at the Ralph Lauren show. Eva Longoria, Eugene Levy ...