You order them to strip

"I suppose you want us to strip now?" Lilith asked with an arched brow.

"Uh, sure, if that's what you want." you reply.

"Way ahead of you!" Eda exclaimed as she shimmied out of her dress, whipped off her scarlet bra and pulled down her leggings & matching panties, before relaxing nude on the couch. "Feels good to let the girls out, doesn't it?"

"Have you no decency Edalyn?!" Lilith cried while trying to avert her gaze from her sister's larger chest.

"Geez Lily, no need to be such a drama queen!" Eda snarked. "Hey buddy, mind helping me getting her out of her shell?"

"Gladly." you respond and begin reaching behind Lilith's hair in search of a way to help her out of her dress.

"This is absurd." Lilith groaned as you felt around for anything like a button or a zipper to take her dress off.

"This coming from the gal acting like she wasn't made to just be a sex doll based off a cartoon character." Eda snarked while getting up to assist you. "Here, let me give you a hand."

By hand, Eda meant literally as she detached one of her hands and it crawled around Lilith's body. Eventually, the hand found some buttons on the back of her sister's dress and got to work on undoing them.

Eventually, the dress fell off, revealing some black leggings, and a sensual black bra Lilith had underneath that she immediately covered.

"Aw come on Lil, flaunt it if you got it!" Eda declared before whipping off her older sister's bra and pulling down the leggings & her panties to reveal quite the shapely butt. "Like what ya see stud?"

"Eda, don't touch me like that!" Lilith began blushing herself.