Yes, that's Lindsay Lohan's sister singing in the Christmas movie

If you watched Lindsay Lohan return to the screen in Falling For Christmas and thought you might have seen her sister Aliana, you didn't Alone, or you are wrong.

The Lohan sisters confirmed that Ariana is not only making a cameo in the Netflix holiday movie, but she's also voicing a new song on the film's soundtrack. Ariana can be seen in the first frame of the film as part of Lohan's character, Sierra Belmont's glam squad. The young Lohan plays Bianca, the stylist on the set. "A skirt or slacks?" she asked Sierra, who responded with a question about the material of the pants. "Vegan leather," Bianca clarified, before Serra requested something else.

Aliana's song "Without You" also makes its debut in the film, as viewers watching the closed captions quickly discovered. Lindsay and Aliana appeared on The Drew Barrymore Show on November 15 and revealed that Aliana wrote the song before the movie was released. "I wrote this song about a year ago, and it worked perfectly into the movie. I'm so grateful," she said at the time.

Lindsay herself sang "Jingle Bell Rock" for the film, a nostalgic tribute to her iconic "Mean Girls" performance. But she was nervous about the importance of revisiting the song, which plays during the closing credits and bells and whistles. "I was [nervous] because I hadn't recorded in a long time and felt the pressure to record it in a way that people who had seen 'Mean Girls' would also enjoy it," she told Entertainment Tonight . "On 'Mean Girls ,' we had dance as a backstop and all the other girls were with me. It was just my voice. So, it was nerve-wracking. But it turned out incredible. I really, really very happy."

This isn't the first time the sisters have worked together: Ariana has also guest-starred in Lindsay's films The Parent Trap, Life Size, and I Know Who Kills Me . Speaking on an episode of Lindsay's podcast The Lohdown , the sister said: "It was so much fun to be able to work together on set."