Sisters (2015)

There aren't very many movies with Amy Poehler and Tina Fey that aren't outright hilarious, thanks to their indisputable comedic chemistry, but this might be the only one that switches their normal roles. This time, Tina plays Kate, the wild child and rebellious sister who can't keep it together, and Amy plays Maura, the uptight sister who has yet to let loose. They're both in their forties now, back at their childhood home to help their parents move out, and they're both pretty unhappy. In an effort to relive the glory days, they decide to hold a rager and invite all their high school friends while their parents are away in a tequila-fueled class reunion that is as entertaining as it sounds. Amy decides to let loose, stripping down to her skivvies, and Tina Fey shows off her bra when she's trying to find the perfectly slutty dress to wear to the party. Then there are the lovely ladies who take off their shirts at the party—because it's a party, after all—like Samantha Bee, who tries to wipe up spilled Jello from her cleavage (need a hand, Sam?), and Chrystal Chau with Greta Lee, who get right to it by showing up to the party wearing sparkly bikini tops.