She'll train in her clothes

You lead her towards the sparring mat. Felicity takes off her glasses and places them on a table as you walk. "I think I'll keep them on. I mean my underwear isn't exactly practical anyway. Do you think I should take my shoes off though? I mean they're kinda -Ooof!" You trip her onto the mat and she lands with a thud. "Hey! You could have warned me!"
"You won't get a warning in a real fight."
"Good point but still." She gets to he feet a little shaken. "What do I do?" You make your way to the other side of the mat.
"Let's see what you've got. Attack me." She runs towards you and tries to punch your chest but you grab her arm and flip her back onto the mat. The top button on her blouse pops as she hits the mat.
"Ow." She says flatly, not moving.
"Get up." She does what you say. "You need to learn to use what you have to your advantage. You're wearing heels, try kicking me with those." She lifts her right leg and tries to drive her heel towards your thigh but you grab her foot before she connects. "Good."
"Can I have my legs back please?" You drop her leg.
"Try aiming a little higher."
"I don't think I can in this skirt." She says, hiking it up a little.
"Try." She does, this time getting her legs up your abdomen before you grab it, tearing the side of her skirt in the process.
"Great, now I have a slit." She says, looking at her bare leg. You push her by the leg to the ground. She lays there looking disheveled before getting back to her feet.