Cheers to the New Year! Celebrities, like Ryan Seacrest, counted down the start of 2019 from a bunch of different time zones across the globe. The "American Idol" host came to us live from Dick Clark's New Year's Rockin' Eve in New York City. Keep clicking to find out how more of your favorite stars rang in NYE 2019 from around the world.
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Kylie Jenner debuted blue hair, and brought along a disposable camera, for a night out with her baby daddy, Travis Scott, in West Hollywood on Dec. 31, 2018.
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"🎉 Happy New Year! 🎉" —Jessica Simpson, who posted this selfie on Instagram on Jan. 1
Alex Rodriguez posted this photo on Instagram while out with his girlfriend, Jennifer Lopez, and her daughter, Emme, at Wallys in Beverly Hills on Dec. 31, 2018.
Eniko Hart posted a selfie with her husband, Kevin Hart, counting down the hours to the New Year on Instagram on Dec. 31, 2018.
David Beckham posted a video watching fireworks with his daughter, Harper Beckham, on Instagram on Jan. 1.
Khloe Kardashian posted this selfie with her baby daddy, Tristan Thompson, on Instagram while partying together in Cleveland on Jan. 1.
Christina Aguilera performed during the Times Square New Year's Eve 2019 Celebration in New York City on Dec. 31, 2018.
"Backstage at Stonewall!" —Madonna, who posted a backstage photo on Instagram before a surprise appearance at a club in New York City on Jan. 1
Emmy Rosum posted this selfie wearing a New Year's Eve headpiece on Instagram on Dec. 31, 2018.
"Happy New Year from me and Justin! Justin? Justin?" —Jesse Tyler Ferguson, who posted this selfie in bed with his sleepy hubby, Justin Mikita, on Instagram on Jan. 1
Mariah Carey performed at the Nikki Beach Saint Barth New Year's Eve soirée on Dec. 31, 2018.
Gigi Hadid posted this selfie on Instagram, dressed up as Mary Poppins for Taylor Swift's "Childhood Heroes" NYE party on Jan. 1, 2019.
"A little something soothing for a lazy day. #RobertFrost calls for a good fire and a cup of tea. ☕️ Happy 2019! xxx #greatpoemtoteachkids🤗" —Jennifer Garner, who posted this photo on Instagram on Jan. 1
"Mood. HAPPY NEW YEAR. XO" —Kerry Washington, who posted this photo on Instagram on Jan. 1
"Thanking the lessons of 2018, especially the ones I feel like cursing;Welcoming 2019 with all the sweetness, softness and gratitude in my heart; Wishing blessings and abundance for us all. Happy New Year, darlings!! xx —Anne Hathaway, who posted this photo on Instagram on Jan. 1
Kim Kardashian West hit the slopes in Aspen ahead of the New Year on Dec. 29, 2018.
"Feliz Ano Nuevo" —Jessica Alba, who posted this selfie with her daughter, Honor Warren, on Instagram on Jan. 1
"With the Bird you take multiple pics and pray one turns out!!! Lol Happy NYE! Love The Danielson's ✨ Ps. Bryan says make sure to recycle tonight! ♻️" –Brie Bella, who posted this photo on Instagram celebrating the New Year with her husband, Daniel Bryan, and their daughter, Birdie, on Jan. 1
"The 4 most important beings on this planet and in any year from now to eternity. Thank you for making everyday better. For the tears, the belly hurting laughter, the inside jokes, cuddles, Netflix binges, secret language, surprise sleepovers, pushing me to grow, sharing clothes and for all that is to come. You are my best friends for life. You make me a better version of myself everyday and I am so excited to embark on another year with you. I couldn't ask for more magical and special souls to do life with. I love you all with every fiber of my being and will be there to protect you day or night forever. Love Your Big Sister"–Rumer Willis, who posted this selfie with her sisters, Tallulah Willis, Scout Willis, Evelyn Willis and Mabel Willis, on Jan. 1
"Happy new year baby!! It's gonna be a great #2019 💏" –Jax Taylor, who posted this selfie with his fiancée and "Vanderpump Rules" co-star, Brittany Cartwright, on Instagram on Jan. 1
"HAPPY NEW YEAR!🎉 2019, I know you're going to be a great one❤️👶🏻" –Brittany Aldean, who posted this selfie with her husband, Jason Aldean, on Instagram on Jan. 1
"This 2019 I hope you find the path that leads you to your greatest destiny. En este año 2019 espero que encuentres el camino que te lleve a tu más grandioso destino. #2019" —Salma Hayek, who posted this selfie on Instagram on Jan. 1
"Happy New Year 🎊 🎉" —Alyssa Milano, who posted this selfie on Instagram on Jan. 1
"Lookin for a new love? Nah. Looking to tailor myself to please the eyes of others? Nah. Bettering myself to make people happy? Nah. This year I'll be me and let go of anything holding me back only accept eyes of love and support. Healthy and fit enough to play with my kids and dance in the mirror. Healthy and fit enough to climb the highest mountain with my closest friends! 2019 will be about simplifying and decluttering. Focusing on what truly makes me happy and laugh. Push and work hard not to prove anything to the world but to prove to myself that I can do anything I put my mind to. Success will live in the 'wow I'm doing it, look at me go.' Happy New year everyone!! Love you 😘" —Kendra Wilkinson, who posted this selfie at the beach on Instagram on Dec. 31, 2018
Robin Thicke kicked off New Year's Eve weekend with a performance at APEX Social Club at the PALMS Casino Resort in Las Vegas on Dec. 30, 2018.