Getting some action is going to take awhile

Grace groans a little before pulling your hands away from her suit. Taking this as a sign of superiority over the situation you step back, not feeling embarrassed over what you did one bit. "Well, it's showtime sis. Let's see what you've got underneath those clothes of yours."

She swallows down a big gulp of saliva, nervous of actually going through with those and show her skin to her own brother, eventually she pulls the outfit down. The rubber pulling away from her body and peeling its way down to her waist, exposing her massive bra clad jugs.

You let out a slight groan from under your breath as Grace's outfit falls away exposing her massive jugs contained inside that tight bra. As you continue to stare at them in all their glory, finding it hard to look away at those men magnets. you responded with a quick: "Hmm they're certainly nice and all...sis, but come on... a bra really ? I guess you don't even want to to win..."

She gawks at you. “What am I supposed to be naked under this thing?!” She rolls her eyes, reaching from right behind her to pull off the bra that's keeping her brother away from seeing her breasts. In a matter of mere moments, Grace's pale tits spill out as she looks away in slight disgust but you could tell that she was secretly enjoying the attention.

"Oh my..." You moan underneath your breath, resisting the urge to grope them with both hands like a man possessed. But upon realizing what you were just about to do, you snap back to reality, continuing your act in the hopes that she might actually let you see more if you continue to play along with her little game.

"Well those are certainly some nice tits you have there, sis." Responding rather sarcastically, "But how do I know they're real ? I can't really rate you above the marvel babes if I can't even verify if they're real..."

Grace rolls her eyes at this sudden remark, as she lets her brain come back up. "You can’t be serious?! You want to feel up your sister?!" She blushes, imagining how it would feel to finally have someone touch her but continues acting like this was some sort of crime amongst humanity. "You’re just trying to get more material to jerk off to later huh?"

"See I told you that you were a prude." You say with a smirk,Grace's cheeks turn red upon realizing what you just said. She quickly averts her gaze, trying to hide the arousal that still lingers in her body. Adding on to what you said with before."Natasha would never shy away from this type of stuff, in front of the whole world on camera but you won't even let just me feel if your tits are real."

Grace looks away, feeling a mix of embarrassment and arousal. As she looks away, you can see the way her body language has shifted from being confident to being submissive. Her breathing becomes more shallow, and she takes a step back from you. "Give up already sis.."

She blushes a tad bit of red, putting back on her Mary Marvel suit back on as slowly as possible while you talk. Upon telling her to give up already with this act, mostly because of how tiring it is. Grace gives a fierce look at your crotch making a dent inside your shorts. “Well then… maybe there's another way to prove that I'm better.”

"Really ? Well let's see what you've got then..." You say excited to see what she has planned, maybe it might be better than getting to feel those mammoth size breasts.