By Kelsey Glein
Updated Aug 10, 2016 @ 2:15 pm
NEW YORK, NY - MAY 02: Kylie Jenner attends the "Manus x Machina: Fashion In An Age Of Technology" Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City. (Photo by Neilson Barnard/Getty Images for The Huffington Post)
Credit: Neilson Barnard/Getty

Now this is the definition of red hot. Kylie Jenner celebrated her 19th birthday by debuting a brand new hair color, and now she has the fiery swimsuit to match.

The birthday girl took to Instagram today to share a photo of herself in a sexy one-piece that complemented her vibrant new hue, and we can't look away. In the snap, the Keeping Up with the Kardashians star wears a plunging high-cut scarlet bathing suit and coordinating fur slides as she poses atop a white couch. Her red hair is done in braids, and she also wears a bodychain, dazzling choker necklace, and diamond stud earrings. She simply captioned the 'gram with "19" and an appropriate red heart emoji.

This picture follows a snap that she posted last night of her just-dyed locks as well as a video she 'grammed this morning that shows her singing "Happy Birthday" to herself with a group of friends.

As for whether her new 'do is real or fake remains to be seen, but there's no question that she looks gorgeous.

VIDEO: Kylie Jenner's Sexiest Bikini Instagrams

Check out more celebrities in swimwear by clicking through our gallery now.