Catwoman and Batman sit on a balcony sitting above the Gotham City financial district. She's wearing the tight black leather costume. It shows off her bum and highlights her athletic perky breasts. He's turned on. She's playing games.
The moment she turns back and looks into his eyes. That's when he makes his move.
She plays on the edge of the balcony. Practicing her balance like a cat. She falls down and he reaches out to grab her. Saving her from the drop.
She lands back down in his arms.
It was all planned.
They wait for a moment and in their embrace she waits for her kiss.
Before they do, his hands begin to wonder over her costume. Not wearing any underwear she simply has to twitch her butt in his lap to feel the growing erection underneath his costume. They kiss, and she grinds harder against him until he's fully hard.
She repositions herself so he's sitting on the ledge. Now she's face first in front of him in his lap. She pulls out her bra-less tits and gets off to the fact that anyone could see them at this moment.
"You know what I want?" she asks.
He watches her hand go between her legs. Her pussy lips can be seen through them. If she were wearing spandex she'd be soaked. But because she chose leather for tonight, her juices cover her ass and thighs.
"Peel it off slowly for me." he demands.
And she slowly peels off her costume. Even though Gotham knows that Selina Kyle is Catwoman, she keeps the mask on. Her therapist will probably explain why later.
She lays on the balcony ledge and he pulls her legs apart.
"Not with the gloves." she asks.

She takes his hand and uses her teeth to take them off. He pulls back his arm and begins to slip a finger inside of her wetness. He contemplates grabbing her breast with the other hand but she's already got both hands on her tits.
He uses one hand to take down his pants and rub his own cock infront of her. She moans loud enough to put them in danger. She wants to fuck that cock so badly. And he wants nothing more than to give it to her.
He knows she isn't satisfied with a finger and right as she starts to catch her breath, he kneels down to admire her body. He spreads her pussy lips and sticks his strong tongue inside of her. It's delicious. She holds onto the cement wall and he grabs her ass to assure her that he's going to be dedicated to making her cum.
His hair works nicely but she grabs the horns of his mask to let him know how fast and slow to move his tongue. He makes his round around all of her sensual pleasure spots. He gives firm kisses to his labia and passionately makes love to her clitoris. Slowly rolling the hood to get access to her pearl.
The look in her eyes is possessed. She wastes no time in warning him as she cums all over the World's Greatest Detective's lips. As she finishes all she can do is wait to kiss him thank you.
Soon he'll turn her back to him and expose her to all of Gotham. Spreading her lips before shoving his cock back into for the first time in months. But now they kiss. She needs to thank that tongue and praise his lips.

"Hey Red!" Harley said.
"Don't stop Harley..." Poison Ivy said.

But she stopped eating out her lover.

"They started already?" she said.

Ivy lifted herself up. They looked at the camera feed they had set up on the water tower to monitor the Bats for the past week.

"Guess that's our window to rob the chemical plant." Ivy said. "They almost always draw it out until 1 AM."
"We could ... always wait for tomorrow?" Harley said. Looking down at Ivy's wet womanhood.