From the Snopes article pictured here:
"These videos are authentic. They show clips from a recurring event
described by the U.K.-based cabaret company that runs it as "the baby cabaret rave experience." In a
message on Instagram informing followers that it had set the account to private following the virality of the videos, the company, CABABABARAVE, said that the videos showed "events … specifically curated for the very young babies and parents… not for 'children of all ages' as implied."
A video shared by the right-wing Twitter account Libs of TikTok shows drag performers in front of babies at an event in the U.K.
www.snopes.com