Sailor Brinkley-Cook just made her “Dancing With the Stars” debut!

The 21-year-old model hit the ballroom with pro dancer Val Chmerkovskiy Monday night, filling in for her mother, Christie Brinkley, who is out for the rest of the season.

“My mom broke her arm,” Sailor explained in her pre-taped interview package. “She asked me if I wanted to fill in for her.”

“I have never danced before,” she continued. “But I feel this adrenaline rush for wanting to pay homage to my mom. My mom’s had three weeks to prepare this dance, and now I have three days. This is for you, Mom.”

Despite only having three days to train and learn the routine, Sailor slayed her Foxtrot to “Uptown Girl”, wowing the audience and judges with her fancy footwork and infectious smile. Christie was in the audience, proudly cheering on her daughter.

“I am blown away,” raved judge Carrie Ann Inaba, as Bruno Toniolo agreed, saying, “Trust my word… I can’t wait to see what you achieve with proper rehearsal time.”

“I am so proud of her,” Christie gushed as she joined Sailor and Val onstage. Sailor and Val received a total of 18/30 from the judges.

Earlier on Monday, just a few hours ahead of the premiere, ABC announced that the actress would no longer be competing after suffering injuries during rehearsals.

“While rehearsing for the premiere of ‘Dancing With the Stars’, Christie Brinkley suffered injuries which required surgery to her wrist and arm,” ABC shared in a statement. “She is unable to continue her planned participation on the show. Keeping it all in the family, her daughter, Sailor Brinkley-Cook, a Sports Illustrated model, has chosen to quickly step in with hours to learn the entire routine and will compete in her mother’s place for the remainder of the season. We wish Christie a full and speedy recovery and look forward to seeing her in the audience, whenever possible, proudly supporting Sailor.”

Christie took to her own Instagram shortly after the announcement was made to provide even more details on her abrupt exit.

“Sailor Breezes In to Save the Day!” she captioned a pic of her daughter in costume. “I just broke my arm into a 1000 pieces requiring surgery with a metal plate and screws to hold my arm together… I’m so sorry if I’ve disappointed anybody! Only something as bad as this could stop me from continuing to dance with my wonderful coach… I was having a blast!”

“Shattering my arm was quite literally a crushing disappointment,” she continued. “I never ever want to let anyone down, so I looked for a silver lining and i think this one is solid gold! Sailor!”

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Sailor Breezes In to Save the Day! Hey My Friends! So here’s the news. I just broke my arm into a 1000 pieces requiring surgery with a metal plate and screws to hold my arm together..Im so sorry if I’ve disappointed anybody! Only something as bad as this could stop me from continuing to dance with my wonderful coach for @dancingabc …I was having a blast!!!! Shattering my arm was quite literally a crushing disappointment, i never ever want to let anyone down…so I looked for a silver lining and i think I found one that is is solid gold! Sailor! But first I would have to convince Sailor to replace me..she was already on the plane to come sit in the audience when I reached her! (Alexa has commitments in NY including her upcoming Cabaret Show at the @cafecarlyle ) I also had to convince my student/ @imgmodels Sailor to overcome serious stage fright to replace me on the show! Sailor always meets her challenges head on and realized she did not want to be defined by her fears so with just hours to learn my routine she is turning my defeat or should i say two left feat into her own victory of courage! So Ladies and Gents I give you my beautiful Sunflower Sailor Lee. And i think you are all going to have a blast together on this season of @dancingabc ! Sorry for the typos it’s my right arm! And Sailor Thank you for taking a very disappointing turn of events into something very special! you know Showbiz is all about getting a break and I guess you can say Sailor and I both got one on this season of @dancingabc #family #familyfirst #challenge #doitforlove #fearless #brave #dare #justtry #silverlining #dauntless #dance #lemonaid #gowiththeflow #carpediem #seizetheday #formom #TeamSailaV #c’est la vie! #teambrinkley

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Sailor shared her mom’s post to her Instagram Stories, writing, “Surprise!!! This has been a whirlwind of emotions but all I can say is wish me good luck.”

The sparkly blue costume Sailor was wearing in her first promo pic for the show appears to be the same one Christie tried on just 24 hours before premiere night:

Last month, ET spoke to Christie Brinkley following the season 28 cast reveal, where she joked about how inexperienced she was.

“I literally don’t know how to dance. Seriously, it’s true… I really don’t have the moves,” she said at the time. “So I’m really excited to learn with the pros. It’s a wonderful opportunity for me.”

“I think whoever I get has his work cut out for him,” she continued. “I think they need to give me a really good one because I need a lot of work… All of the dancers on the show are incredible, really amazing.”

Hear more in the video below.


Christie Brinkley Says ‘DWTS’ Exit Is a ‘Crushing Disappointment,’ Hints at Who Sailor’s Partner Will Be

Christie Brinkley Exits ‘DWTS’ Hours Before the Show’s Premiere Due to Injury

Christie Brinkley Says Her ‘Dancing With the Stars’ Partner Has ‘His Work Cut Out for Him’ (Exclusive)