Disassemble her clothes

Now's the time for the big finale. You hop into superspeed, and first reach around the waistband of her skirt. There's a set of buttons at the back which hold the skirt wound tight. Once you unbutton the back.. Well, then it's more a towel than a skirt. Once you resume time gravity should immediately do the rest.

Next, you go for her corset. A set of laces at the front and the rear hold the left and right halves of the corset together. You pull all the laces out on either side, leaving the halves basically suspended by air, like sheets of wallpaper without glue.

You sit back down, allowing time to resume at its normal speed. Instantaneously her skirt flops from her waist to the ground, like a puppet whose strings were cut. A split second later the two halves of her corset simply droop off her torso and tumble to the floor like leaves, allowing her volumous tits to sag a little under their own weight. In the span of seconds she is left entirely naked.

For any other person who might have viewed this scene from a third person vantage point, one second the maid was declaring victory, and the next - as the last syllable barely left her lips - her entire outfit collapses, simply falls into pieces in front of you, giving you an unobstructed view which proves she isn't wearing any underwear, not to mention a great view of her tits as well.

The maid is momentarily paralyzed by shock, humiliation and embarrassment, before doing a double-take and realizing that her clothes really did just fall off. Not just that, but that she doesn't have any underwear on. She's totally naked, with not a scrap of fabric protecting her modesty. She gasps loudly, hurredly sets down the platter she had in her hand, and trying and failing to cup her large boobs with one hand, covering her crotch with the other.

"It seems I was right, so I believe I get my drink for free", you remind her.

She blushes brightly in response, gathers up the pieces of her outfit and hurries to behind the counter to put her clothes back on, and wondering where her underwear had gone.