It seems miss black bikini somehow lost her top in the bathroom, and came out struttin (the very intentional "I'm proud of my new boobies" strut), while her friend was kinda covering her stockers with her top and arms, not uncovering them till she was just far enough that I only saw side boob.
Ahhh, the old "modified vs. stocker" debate...did you offer to do any "feeled" studies?