Look, this is not as easy as it normally would be because I'm already stretched out and your dress isn't exactly made of lightweight fabric!

[Not only the weight, but it's not exactly a slim evening dance dress that would make this kind of lift in his current position the easiest thing to do. So heave ho as he puts all his weight back and uses his arm strength to pick her up, pivoting on his heel a bit so it's more of a twirl before he sets her down.