Cheryl Burke Is All Smiles While Filling in for Abby Lee Miller on 'Dance Moms' Set

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Cheryl Burke is officially in!

The former Dancing With the Stars pro looked happy as can be at her new gig, filling in for Abby Lee Miller on Lifetime's Dance Moms, on Wednesday.

EXCLUSIVE: Cheryl Burke to Replace Abby Lee Miller on 'Dance Moms'

Burke sported a sexy, fitted black ensemble as she smiled for photographers outside of Miller's Los Angeles studio.

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EXCLUSIVE: Abby Lee Miller on Cheryl Burke Taking Over 'Dance Moms': 'I Bet You She's Treated Differently'

"I'm very excited to work with the kids," Burke told ET outside the studio, adding that her first day of filming was "amazing." "Honestly it's a great change for me. I'm teaching very talented kids."

ET learned exclusively on Tuesday that Burke would be filling in for Miller after her abrupt exit from the show, though the choreographer told ET on Wednesday that she thinks it's "great" that Burke will be stepping in. 

"I think that's great," Miller explained, adding that she left the show after production frustrations. "I only met her once at a housewarming party a couple weeks ago. I'm glad that someone who has worked on a network show for as long as she has on Dancing With the Stars is going to see what I've been working with for seven years."

"I don't think she's replacing me, I think it's going to be a different vibe," she added.

EXCLUSIVE: Abby Lee Miller Quits 'Dance Moms' in Angry Instagram Post -- Here's Who Will Fill In

See more on Miller's Dance Moms departure in the video below.