J . Lo kicked off the glitzy American Music Awards ceremony with a show -stopping performance which consisted her and her entourage dancing through songs like Ed Sheeran ’ s Thinking Out Loud , Beyonce ’s 7 / 11 and Mark Ronson and Bruno Mars’ Uptown Funk .

However , when Nicki Minaj’ s Anaconda started playing , one of JLo’s dancers unintentionally ripped her pants & exposed her b * tt .

Fans were quick to take to their Twitter accounts after the incident to comment on what they had seen .

Melanie Langevine posted : “ I feel so bad for JLo’ s dancer whose pants split ! # wardrobemalfunction # JLoAMAs .

Another Twitter user , named Papa Woitz , wrote : “ That dancer split her pants . What a cheeky moment .