You overwhelm the guard

After some tense grappling, you gain the upper hand. Atop the struggling guard, you land a delicate hand chop to the back of their neck as they attempt to roll out from under you.

The guard falls limp. Unconscious for the moment, you'll need to work quickly.

You remove the belt and catsuit, leaving the guard in a pair of dark bikini briefs and dark socks. You find several zip ties on the utility belt and stringently hogtie the guard.

Realizing how lucky you were that the guard didn't call out during the struggle, you decide to gag them as well. With little else at hand, you strip the dark knee socks from the guard's feet. Balling one up, you stuff it into their mouth, tying the other sock tightly over it.

Satisfied with your work, you begin to strip off your own clothing and zip into the catsuit. It's a little tight in spots, but fits surprisingly well. You inspect the items on the belt just as the guard comes to with a mild groan.