Their collars

Nora merely struck a glamorous pose, still in her regular clothes. Her collar read 'Statue'.

Pyrrha, however, put on a more interesting collar. Her clothing changed to a camo bikini, with combat boots and leather gloves, with dog tags hanging from her neck into her cleavage. Her collar read 'Bodyguard'.

"Master Arc," Pyrrha said with a salute. "What brings you to the training grounds?"

"Just admiring the statue..." Jaune chuckled, giving Nora's small but pert breasts a quick squeeze.

"I see..." Pyrrha said. "Well, would you like to train with me?"

"Yes," Jaune grinned. "And I have special training in mind for you..."