TikTok is one of those apps you may first download as a joke, but then you find yourself slowly getting addicted to it by spending endless hours scrolling through the For You page. You could even start making them just hoping that you end up being TikTok famous. Along with famous "TikTokers," celebrities have also found the app, where they can post concert videos, promos for new music, or makeup transitions or even take part in the latest trends going around the app. Browse through our gallery to see what celebs are taking over TikTok, and be sure to follow POPSUGAR on TikTok!
Username: beberexha
Typical TikTok: Bebe Rexha takes her TikTok fans on tour by showing backstage videos and even videos of her performing in front of thousands of people.
Username: mariahcarey
Typical TikTok: The Christmas queen herself, Mariah Carey, too has a TikTok account. Recently, she shared a video of how excited she was about the upcoming holiday season. She also knows about the hottest trends featuring her own music.
Username: selenagomez
Typical TikTok: Selena has been on TikTok since 2016, didn't post for a couple years, but came back with two adorable videos. We're hoping for more Selena TikToks in the future.
Username: officialreesetiktok
Typical TikTok: The Legally Blonde actress started out on TikTok with help from her son, Deacon. Since then, she is always on top of the latest trends, including becoming a VSCO girl.
Username: officialhowiemandel
Typical TikTok: Deal or No Deal host and judge on America's Got Talent Howie Mandel has been on top of the latest TikTok trends for a while. Some of his videos even feature other famous friends.
Username: jessicaalba
Typical TikTok: Most celebs on the app are always on top of the trends, and Jessica Alba is no exception. She posts cute makeup and dance videos that you definitely need to see.
Username: willsmith
Typical TikTok: Will Smith shares funny moments, Fresh Prince of Bel-Air nostalgia, and more on his TikTok account.
Username: marshmellomusic
Typical TikTok: Marshmello's signature prop is his mask — he is never NOT seen in it. The videos he posts have people edited so they're wearing the iconic mask.
Username: tessabrooks
Typical TikTok: Anyone who is a Tessa Brooks fan knows that she is a great dancer, and she shows off her talent in her TikTok videos!
Username: justinbieber
Typical TikTok: Justin Bieber JUST created his TikTok channel, and we can't wait to see what he'll post as he releases new music and goes on tour . . .
Username: lizzza
Typical TikTok: Liza Koshy is just out here to make us laugh on TikTok, and she's doing a damn good job with all her funny videos.
Username: itsjojosiwa
Typical TikTok: JoJo Siwa shows off her dancing skills, unique outfits, cute bows, and her JoJo customized car.
Username: terrycrews
Typical TikTok: Terry Crews shares hilarious lip-syncing to songs that are popular on the app.
Username: meghantrainor
Typical TikTok: Meghan Trainor shares funny videos of herself and cute videos with her husband.
Username: daviddobrik
Typical TikTok: Within David Dobrik's TikToks, you always know what he's up to. He shares funny videos of him and his friends doing pretty much everything.
Username: 5sos
Typical TikTok: You can always find 5 Seconds of Summer promoting their new music, along with backstage footage.
Username: mackenzieziegler
Typical TikTok: Mackenzie Ziegler can always be found making dance videos and funny videos with her friends.
Username: lewiscapaldi
Typical TikTok: Just like anything else Lewis Capaldi posts on his social media, his TikTok account is just as funny. He shares videos of him singing along to hit songs and other popular trends.
Username: jonasbrothers
Typical TikTok: Nick, Joe, and Kevin Jonas always share hilarious videos of themselves getting ready to meet fans and go on stage, and they always post funny snippets of their lives.
Username: jimmyfallon
Typical TikTok: Jimmy Fallon shares clips from The Tonight Show and cute videos with his family.
Username: mileycyrus
Typical TikTok: Miley Cyrus recently joined TikTok and posts videos of her lip-syncing to music and dancing. She's just bein' Miley, y'all!
Username: britneyspears
Typical TikTok: Britney Spears always shares her daily workouts, outfits she wears, and cute videos using a silly Snapchat filter.
Username: liampayne
Typical TikTok: Liam Payne posts snippets of his songs and videos, as well as shares fan-made TikToks his followers create for him.
Username: romeob7
Typical TikTok: Romeo Beckham's TikTok took off when he posted a video of himself dancing with mom Victoria to Spice Girls music, and since then, he's continued to post silly videos.
Username: lauvsongs
Typical TikTok: Lauv posts a lot of fun videos — including a duet or two — as well as videos from public appearances.
Username: joejonas
Typical TikTok: Joe Jonas is just getting started on TikTok, but you can find behind-the-scenes videos as well as his equally famous brothers.
Username: nickjonas
Typical TikTok: Nick Jonas has gotten in on some of the TikTok trends — and even carried some Instagram filters over to play with.
Username: noahschnapp
Typical TikTok: Noah Schnapp's TikTok is basically just him memeing himself and posting really funny videos of his very famous life.
Username: irisapatow
Typical TikTok: Iris Apatow posts cute videos with her friends but likes to casually throw it to her famous family once in a while.
Username: postmalone
Typical TikTok: Post Malone's TikTok is just him living his best Post Malone life, including his appearances at high-profile events and behind-the-scenes snaps.
Username: prettymuch
Typical TikTok: You want fun behind-the-scenes glimpses of the hot guys of Prettymuch? Follow them on TikTok immediately.
Username: cncomusic
Typical TikTok: The boys of CNCO love to share exclusive videos with their fans, which is exactly what they do on TikTok.
Username: sofiawylie
Typical TikTok: There are dance videos all over TikTok, but you won't find very many that are nearly as good as Sofia Wylie's.
Username: sheisdash
Typical TikTok: Dascha Polanco shares little bits and pieces of her life — including her kids — and keeps it completely real about her day-to-day.
Username: usher
Typical TikTok: Usher is brand new to TikTok and has only posted one video, but we're hoping future videos include a lot of dancing and shirtlessness.
Username: lizzo
Typical TikTok: Think about how fabulous Lizzo is in her everyday life. Put that in a video, and that's what her TikTok is. Nonstop fun and amazingness.
Username: ashleytisdale
Typical TikTok: Ashley Tisdale is loving the TikTok trends, especially the dance ones, and she continues to get in on them.
Username: thechainsmokers
Typical TikTok: Alex Pall and Drew Taggart — better known as The Chainsmokers — post backstage glimpses at their shows, fun takes on TikTok trends, and silly videos of each other.