The actor, singer and dancer surprised fans with photos and videos of her transformation.
JoJo Siwa has ditched her signature ponytail for a very flashy hairstyle.
On Wednesday, the actor, singer and dancer teased his hair transformation on Instagram.
She uploaded a short clip of someone off-camera, snatching away a big chunk of her blonde hair.
"Mayya has done something today," she wrote in the caption.
Then, Siwa took to Instagram on Thursday to tell fans about her cropped, curly do. She uploaded a picture showing the front of the pixie haircut.
Siwa simply captioned the photo, "HAPPPPPY."
She used the same caption for a video that she uploaded on TikTok of her twirling and waving her hair. Singing a line from Ariana Grande, "You like my hair? Gee, thanks, just bought it" from her hit song "7 Rings" playing in the background.
The 18-year-old also shared more glimpses of her new look on her Instagram stories.
"So I just got my hair cut yesterday, and yesterday I went in like a down and curly moment. But today, I went in like an up and back moment. ... I feel like I can be up and back ,” she said in a video twirling her hair.
Siwa continued, "I mean, it's going to be different every day because I'm still learning how to do it. It's so different from long hair. It's crazy. But, I'm obsessed!"
For years, Siwa has donned a classic, blonde updo and rarely experimented with different styles. She temporarily changed her look for the Halloween episode of "Dancing with the Stars" last year. She dyed her hair brown to match dance partner Jenna Johnson.
Johnson and Siwa made history as the first same-sex couple to compete on an ABC show. Siwa finished second behind NBA champion Iman Schumpert.
Fans will see more of Siwa's latest hairstyle when she appears as a judge on the upcoming season of "So You Think You Can Dance" on May 18.
The long-running Fox series announced on Twitter Monday that Siwa will join the judging panel for the show's 17th season along with "SYTYCD" alum Stephen "Twitch" Boss and "Glee" star Matthew Morrison.
Siva expressed excitement about this news on his Instagram.
"Finally!…." She started in the caption. "'So You Think You Can Dance' is coming to Fox this summer and I'm so grateful I'm going to be the judge! It's an honor to be part of the show's return!!!"
He added that the show would premiere the day before his 19th birthday, making it "the best rise ever!"