Mark Wahlberg and stars of 'Fuller House' and 'Grey's Anatomy' also turned up to the Hollywood Bowl stop of the group's 'Mixtape Tour.'
The singer also dished on her recent breakup, her killer body and living with Lyme disease.
ET breaks down everything you need to know ahead of this week's two-night finale!
ET spoke with the 47-year-old singer and her professional partner Alan Bersten after her exit from the dancing competition show.
The competition is getting stiffer after this 'DWTS' hopeful was eliminated on Tuesday.
The singer got candid with ET after sharing her health struggles on the 'Dancing With the Stars' season 25 premiere.
The '80s pop icon opened up to ET about learning how to 'roll with the punches' when it comes to dealing with the symptoms her illness.
Before taking a gamble at Sunday's Los Angeles Police Memorial Foundation Celebrity Poker Tournament, the 23-year-old dancer opened up about the health struggles faced by his 'Dancing With the Stars' partner Debbie Gibson.
The '80s pop icon will be dancing with Alan Bersten on the upcoming 25th season of the dance competition show.
ET caught up with the 47-year-old singer and her pro dance partner, Alan Bersten, to talk about the new season of 'Dancing With the Stars.'
The 'Only in My Dreams' singer will be the latest celeb to compete for the Mirrorball Trophy.
