Julianne Hough Filling In For COVID-Stricken Brother Derek On 'DWTS' After Actress Snapped Kissing Hunky Model Charlie Wilson

Julianne Hough is sashaying back into the ballroom to guest host the season 30 finale of Dancing With the Stars on Monday, November 22.

The blonde beauty — who last appeared on the hit ABC dancing series in 2017 — is stepping in for her brother, Derek, who revealed he was diagnosed with a breakthrough case of COVID-19 last week is quarantining.

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“UPDATE: This week’s shows in Vegas will be rescheduled for a date soon, stay tuned and I’ll announce the new dates shortly! Sharing some news 🙏🏼❤️,” the 36-year-old judge captioned a clip via Instagram on Tuesday, November 16, talking about his diagnosis.

The World of Dance alum added he "just found out," and stressed to his followers that he is doing OK! "I feel strong, but I'm currently taking advice from medical professionals. Doing everything I can to get better as fast as I can,” he explained.

Derek will appear in a pre-taped segment during the finale though, reported PEOPLE. Julianne teased her return to DWTS via her Instagram Story early in the day on Monday, saying: “I'm super excited because today you may see me do something that you've seen me do in the past — but it's a surprise.”

The 33-year-old first joined the cast as a professional dancer in 2007. She left two years later, then returned in 2014 as a judge, until ultimately leaving in 2017.

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The Footloose star was spotted on Friday, November 19, kissing a mystery man — who was later identified as hunky model Charlie Wilson — nearly a year after she called it quits with ex-husband Brooks Laich.

Hough and Laich announced they were ending their marriage in May 2020. The couple had tied the knot nearly three years prior. The news came after the Rock of Ages actress began quarantining separately from the former hockey player in April of that year at the start of the pandemic.

The exes released a statement at the time declaring they had "lovingly and carefully taken the time we have needed to arrive at our decision to separate."