Bright yellow caution tape was tied to Cardi B’s trailer.

It was a last-ditch effort to keep fans, artists and their entourages, and other very important people “just a few feet back, please,” as the very pregnant rapper made her way into Broccoli City Festival, held Saturday in Washington D.C.’s RFK Stadium.

Whether venue security realized it or not, the tape created a sort of boyband pandemonium around the rapper’s arrival.

It’d be the last performance she’d give before taking a break ahead of the impending birth of her baby with fiancé Offset, of Migos fame.

The mom-to-be announced she’d be taking a maternity leave of sorts in a hilarious, profanity-filled Instagram post — the place where she first accumulated fame as a funny ex-stripper who mused on about life, and gave advice fans never knew they needed. “I’ll be back for the Bruno Mars tour,” which kicks off in Denver on Sept. 7, she assured fans.

After snapping a photo of herself, with one leg up sexily on the couch, Cardi was whisked to the stage in a golf cart as fans — men and women alike — screamed her name.

Although many fans are impressed with Cardi’s supposed overnight success and her ability to create a superstar music brand after appearing on just two seasons of “Love…