Mariah Carey performed at the ‘Lovers & Friends’ festival in Las Vegas on Saturday, May 6. (ACES / BACKGRID)

Mariah lit up Twitter with her set that included hit after hit, including everything from her hip hop influenced bops like the “Honey” and “Heartbreaker” remixes — but one major moment that got the internet talking was her reunion with Boyz II Men — consisting of GRAMMY winners Nathan Morris, Wanyá Morris and Shawn Stockman. Fans could be audibly heard screaming and losing their minds as she teased the song then introduced the trio, who made their way out on stage.

Mariah collaborated with the group on their 1995 hit “One Sweet Day” which appeared on her fifth studio album, Daydream. The song, which Mariah co-wrote herself with Walter Afanasieff, went on to break records — spending a whopping 16 weeks on top of the the Billboard Hot 100 in the United States. The song was the longest running number one for 23 years, being displaced by Justin Bieber‘s “Despacito.” Notably, Boyz II Men formerly consisted of four members but Marc Nelson is no longer part of the group.

Mariah has been keeping busy as of late with performances as well as her adorable Monroe and Moroccan who recently celebrated their milestone 12th birthday. Their glam mama took to Instagram with a sweet birthday wish post, writing, “Happy birthday to my favorite people on the planet!!! I thank God for you every day! ‘Our love is Supernatural!!!’  Ooh darlings ‘cause you’ll ALWAYS be my babies!!!” in a video set to her own song, “Always Be My Baby.”