Lucy gets dressed in a cute/sexy outfit

"Hang on! I've got a great idea!" Lucy cheered as she started to strip down to her underwear. Erza/Juvia only stared blankly at this. "What are you going to wear?"

"Wait, why aren't you freaking out, Juvia? You can't even be comfortable naked when we all bathe together. It's like you're Erza or something." Lucy said as she continued looking for a costume in her closet.

"Uh...Erza helped me out in that department." Erza/Juvia replied, laughing nervously. Suddenly, Erza/Juvia stopped laughing as Lucy emerged in a new costume.

Lucy now wore a white nurse's outfit that had a very short miniskirt, matching high heels, and exposed her abundant cleavage. She also wore white pantyhose and a matching hat. The pantyhose hugged tightly, especially in the rear, but she ignored it.

"Well, how about we have a little fun?" Lucy suggested.

What do they do?