The 15 funniest movies about people pretending to be someone else

A divorced dad transforms into a sweet Scottish nanny just to spend time with his kids, leading to some seriously chaotic and heartwarming moments. The accent alone is iconic, darling! 

Two FBI agent brothers go deep undercover as white, blonde hotel heiresses, and the results are as ridiculous and quotable as you'd expect. "Hold my poodle!"

An FBI agent disguises himself as an oversized Southern granny to catch an escaped con. Expect plenty of slapstick and "Oh, hellur!" moments. 

A lounge singer witnesses a murder and hides out in a convent disguised as a nun. She transforms their choir from timid to show-stopping, much to the Mother Superior's initial horror. 

Identical twins separated at birth meet at summer camp and scheme to switch places to get to know their other parent. The accents and elaborate plans are peak childhood goals, and quite hilarious, too. 

A tomboyish FBI agent has to go undercover as a beauty pageant contestant to stop a bombing plot. She learns to glide, perfect her "world peace" answer, and kick some serious butt. 

Amanda Bynes poses as her twin brother to play soccer at his boarding school, juggling a new identity, a cute roommate, and some serious on-field action. 

A struggling rocker impersonates his roommate to get a substitute teaching job at a fancy prep school. He ends up turning his class of pint-sized prodigies into a legit rock band. Look out, AC/DC!

Two underachieving cops get a hilarious second shot at high school when they go undercover to bust a drug ring. They quickly discover that being popular is way harder than they remembered, and infiltrating teen cliques is a truly awkward mission. 

A tough-as-nails Navy SEAL trades combat boots for baby bottles when he goes undercover to protect a group of unruly kids. Nailing bedtime stories and diaper changes proves to be his most dangerous mission yet. 

Three chauvinistic frat boys get kicked out and decide their best shot at redemption (and proving a point) is to dress like women and pledge a sorority. The learning curve is steep and gives viewers tons to laugh at. 

A popular mean girl magically swaps bodies with a sleazy, small-time criminal, forcing them to hilariously navigate life in each other's shoes. The physical comedy? Pure gold.  

When a bad-boy basketball star gets booted from the men's league, he pulls a switch on the court, joining the women's league in disguise. He learns a few lessons about life and sportsmanship, with plenty of laughs along the way. 

A group of prima donna actors filming a war movie gets dropped into a real jungle and thinks it's all still part of the act. Their over-the-top method of acting while facing actual danger is hilariously unhinged. 

When Lola moves from NYC to the suburbs, she decides to spice things up by inventing a dramatically fabricated life to become the center of attention. Her fibs lead to some seriously comedic consequences ... and a killer lead single for the movie's soundtrack.