She keeps Mackenzie's panties on display

While Mackenzie was clumsily trying to move her ruined panties back into their proper place around her hips, Willow seized the opportunity. She quickly plucked the pin free from the skirt she'd just ripped off her friend's body and moved in close to Mackenzie again, letting the skirt drop to the floor.

"Here, use your mini-jacket thing!" Willow said, tugging the shrug off Mackenzie's shoulders and down her arms, leaving her shoulders completely bare.

"Willow, stop!" Mackenzie said, still holding her panties in place with both her hands.

"Trust me, I have an idea!" the dirty blonde said as she yanked the shrug down further, wrenching it off Mackenzie's wrists. This separated Mackenzie's hands from their positions for a second, but the redhead was ready this time and she swiftly regrabbed her underwear before it could fall more than an inch.

Willow crouched down and began pinning the black fabric to Mackenzie's panties. She carefully used three pins as she worked her way behind Mackenzie. When she had finished Mackenzie was wearing something of an improvised skirt. Although, thanks to the shrug's smaller size, it didn't cover the very front of Mackenzie. There was about a six inch gap, right where the front of Mackenzie's skimpy panties were.

"There ya go!" Willow said proudly.

"It's not big enough!" Mackenzie said, self-consciously placing her hands in front of the window to her underwear. By now, the two girls had attracted the attention of quite a few partygoers, and Mackenzie couldn't help but notice how many people were staring at her. "Couldn't you have tried using my actual skirt instead?" she complained.

Willow turned to where she'd dropped the skirt, ready to lie about a reason why that wouldn't have worked. But she found that she didn't have to lie, because the skirt was genuinely gone. Had someone taken it while the girls weren't looking?

"Sorry, think it kind of got lost in the confusion!" she said, "But don't worry, you look fine now. Your ass is literally covered!"

Mackenzie pouted but didn't object any further. The two boys she'd been chatting with were more than eager to continue conversing with the adorable girl they'd just seen undressed, so Mackenzie did her best to pull her hands back to her sides and ignore that fact that her underwear was partially on display.

Willow rejoined the conversation as well, mentally grinning like a fool. So far so good! And she already had the next step in mind. Her hastily cobbled together "skirt" wasn't going to be staying on Mackenzie's hips for long. No, Willow had pinned it far too loosely for that. Even now she noticed Mackenzie tugging the garment back up every half minute or so.