Abby Lee Miller of the Abby Lee Dance Company (ALDC) has a major surprise in store for the girls of her junior elite competition team. The stars of Lifetime's hit reality TV series "Dance Moms" are preparing to shoot a web commercial for the ALDC and Miller enlists the help of a special guest to work with the girls on a new dance routine.

In a sneak peek for the Tuesday (March 22) episode of "Dance Moms," instructor Abby Lee Miller gathers her girls around to announce the name of her surprise guest. As soon as she calls out YouTube star Todrick Hall's name, the girls scream, clap and jump up and down in excitement.

Hall bursts through the door at the side of the dance studio dressed in jeans, a varsity jacket over a gray T-shirt with a red flannel button down shirt tied around his waist and a fitted black baseball hat with the Los Angeles 310 area code embroidered across the front. He bounces before performing two front flips, then lands on his feet while the girls cheer him on.

"Our girls are really excited 'cause they love him," Melissa Gisoni (Maddie and Mackenzie Ziegler's mother) says in an on-camera interview. "Todrick is a YouTuber and the girls did 'Freaks Like Me' with him, it was so much fun for them. Todrick's so creative and talented, so I'm sure it's gonna be great."

"That made an entrance, got it?" Miller says after Hall greets each girl of the dance troupe with hugs.

"Wait, I have a question before we start, sorry," Hall interrupts Miller, looking at the mirror wall behind her with each of the dance group member's headshots taped up in a pyramid form. "Can I please be on the pyramid?"

"As long as you have your mother call me," Miller jokes and the girls laugh.

Miller explains to the girls that they will be learning a routine this week that will double as their competition dance as well as the routine they will perform for the ALDC web commercial.

"It is inspired by 'The Wiz,' so we will be doing 'Ease On Down Santa Monica Boulevard,'" Miller announces as the girls erupt in a chorus of claps and cheers again. She also tells the girls that they each will be singing the song in the commercial as well.

"So we have to hurry because we only have so much time to get things done," she tells her girls and give Hall a high-five. "Let's do this."

Watch the full sneak peek below and be sure to catch tonight's episode of "Dance Moms," airing at 9 p.m. on Lifetime.