Comparing sizes

"So thats all you've got?" Sally asked Ava, "A little pistol?"

"It's all I need." Ava replied, then after a pause, added, "Why, what have you got?"

Sally reached a hand inside her shirt and pulled out her own gun, slightly larger than Ava's. She held it up with a cocky smile.

"Okay, your gun is bigger," Ava admitted, "but you don't have one of these tucked in your bra." She pulled out a small capsule.

"What is it?"

"When it gets broken, it..." Ava held the capsule too tightly, there was a faint cracking noise and it began to spew smoke, Ava's eyes widened in alarm, "it emits a corrosive chemical!"

"What?!" Sally gasped as Ava held the capsule away from her, causing the brief cloud of smoke to gather around Sally's shirt. When it cleared a few seconds later, the shirt had dissolved, leaving Sally in a heart-patterned bra which matched her panties. At that moment she became very conscious that the two of them were still surrounded by party guests.

"Oops." Ava said with a shrug.

"I'll oops you." Sally grumbled as, in their underwear, both agents continued following Camille.

"Down here." Camille pointed at a window-washing cart on the side of the building.

"Where?" Ava asked.

"She hid something in this cart." Camille replied, "I think it was the ruby."

"Why would she hide it and then escape...?" Ava wondered, but she was cut off by Sally.

"If you want to stay here and solve mysteries, fine," the American agent said, stepping on to the cart, "but I'm going to get that gem back."

"Wait, no, I want to do that, too." Ava insisted, following her.

As soon as both women were on the cart, there was a sudden lurch and it began to fall quickly downwards....