Katy Perry puts on fierce performance in leotard and thigh-high boots as she continues world tour

Katy Perry is busy touring the world with her wardrobe full of tiny, PVC outfits and props - and last night saw the singer put on one of her most fierce performances yet.

The singer took to the stage at San Juan, Puerto Rico in thigh-high boots and a tiny leotard for the Prismatic World Tour, risking EVERY wardrobe malfunction as she danced and twerked.

With backing dancers in huge helmets behind her, Katy put on a steamy show as she danced against them.

This came dangerously close to a malfunction

At least there were no unwanted stage invasions this time.

The pop sensation brought a fan up on stage during her performance at Rock in Rio festival last month, but she probably didn't expect it to go quite like it did.

Mid-show the Roar singer invited the chuffed (and slightly dazed) superfan up and it soon got a little crazy.

Katy Perry gets groped by fan onstage

Not wasting any time to get up close and personal with her idol, the blonde girl went straight in for a big embrace and planted kisses all over her face and neck.

“She's kissing my neck!” Katy yelled to the crowd while trying to peel her away at the same time.

“We might need that water back. We need some water,” she carried on.

“I think she's rolling,” Katy then joked.