Riana proceeded to gently hide you by placing you inside one of her bra cups, a little bit beneath her massive nipple. "Hope you're comfy down there," she muttered, before walking up to Palari. "Sorry about that, thought my straps were a bit loose."
"Thought we checked them this morning?"
"Uh... Doesn't hurt to double-check, does it?"
"Suppose not. Now get out there, the others are waiting."
As Riana jogged down the hall to the stage, you were bounced about within her bikini top. Thankfully, with how soft her boobs were, you didn't need to worry about getting too sore or bruised by it. Eventually though, you grabbed onto her nipple to get some relief from the jiggling, worrying about how much more movement would happen during her group's dance. Doing this caused a drop of milk to drip out, which you slurped up—remarkably delicious! Perhaps you could get more out of her tit... Or climb into the source.
You may not get much say in the matter, though, as you heard some applause from the audience before some Eastern-sounding music began to play. You tightened your grip on Riana's nipple as her bouncy choreography began, hoping it would be enough...