They cheat when they put their arms up over their head. It pulls the boobies up and lessens the flopo effect. They have to be arms down and those suckers are stuck on there as if there was no gravity on Earth.
That is Carri Lee. If you do enough digging around for her on the internet, there'll be loads of her for you. Sometimes her name is spelt Carrie Lee...used to be an Adult Channel regular in the UK.