The songstress has dabbled in acting and now she will try her hand at judging on the upcoming season of "American Idol."
Let's take a trip down memory lane with the singing sensation.
Body After Babies
Nov. 2011: The singer debuted her much thinner body on the cover of US Weekly. She and hubby Nick Cannon welcomed twins Moroccan and Monroe on April 30, 2011. "I gained an enormous amount of weight," she revealed to the mag about her pregnancy.
Mariah Bares All
April 18, 2011: Mariah takes it all off for the cover of Life & Style magazine.
June 4, 2009: Mariah attends the Fresh Air Fund Salute to American Heroes with hubby Nick Cannon.
May 16, 2009: Mariah Carey radically altered her appearance for the critically acclaimed film "Precious," which had its international premiere at the Cannes Film Festival.
March 31, 2009: Mariah and husband Nick Cannon celebrate her 39th birthday on a Barbados beach.
Mariah Carey sports a cute little butterfly on her right upper hip.
Mariah Ties The Knot
May 2008: "We really do feel we are soulmates," Carey tells PEOPLE, following her sunset ceremony at her Bahamian estate. "I never felt a love like this was in the cards for me," she gushes.
Jan. 16, 2009: Mariah Carey and Nick Cannon arrive at the premiere of "Push" during the Sundance Film Festival in Park City, Utah.
Mariah Carey trotted out a beach bikini for Vibe in 2008.
Mariah Carey dropped her clothes for Interview magazine in 2008.
Mariah talked to Playboy in 2007, but that's as far as she went.
Feb. 27, 2008: Singer Mariah Carey makes an appearance on MTV's "Total Request Live," in New York.
Dec. 7, 2005: Mariah Carey looking gorgeous.
Nov. 13, 2005: Mariah Carey accepts an award for best R&B song at the third annual Vibe Awards in Culver City, Calif.
Oct. 10, 2003: Mariah Carey sings her heart out.
May 9, 2000: Mariah Carey takes home another award.
Old School Mariah
Nov. 16, 1998: Mariah's fresh-looking face.
Belting it Out
Dec. 11, 1997: Mariah Carey performs.
June 1, 1996: Mariah Carey in full '90s glory.
The singer has grown and evolved over the years.