The Rock sported a Christmas sweater-themed onesie on Live With Kelly and Michael and channeled Elvis Presley with a performance of "Here Comes Santa Clause," in an episode that aired on Christmas Eve 2014. Watch it here!
Kourt covers her baby bump in a warm onesie.
Now THAT's what you wear on a flight!
The E! star celebrates her 59th birthday at Disneyland in comfort!
Yum! The singer makes a tasty fashion statement in a pizza-patterned jumpsuit.
Comfort was key for the "Beautiful Soul" singer who stepped out in a blue, hooded onesie and a pair of man-Uggs.
The X Factor judge stays warm in a fuzzy onesie with cute animal ears.
Always the fashionista, RiRi modeled a River Island camouflage jumpsuit as she caught a flight in NYC.
The pop star and his pal donned matching onesies in Sweden.
The Brit beauty keeps it colorful in a floral onesie and chic sunglasses.
Someone's hungry! The supermodel wears the same pizza onesie that Katy Perry wore!
The actress keeps cozy in a skeleton onesie and a knit beanie on set.
The Pretty Woman star is the definition of comfort in her denim jumpsuit.
The pop-rocker flashes some cleavage underneath her camouflage jumpsuit while signing autographs.
How cute! The Shake It Up! actress dresses as Minnie Mouse in a polkadot onesie.
The "Just Give Me a Reason" crooner seems cool and relaxed in her red and black onesie as she boards a flight with her family.
Scary Spice shows off her star-spangled onesie in London.
MORE PHOTOS: Celeb wardrobe malfunctions