Walk into that bedroom tonight. Wait till he's there, pull your shirt off slow, sexy, set it on the dresser, chair whatever. Talk with him about what you love about him.
Watch his face, stare into his eyes while you are talking, then unzip your jeans, slide them down and kick them off.
Take a few steps in his direction while you tell him how much you love the way he makes love to you (or if you like a little more dirty talk, the way he (pick your dirty way of putting it and fill it in here))
Slip the panties off and let them fall on the floor too.
Sure, it's nice to admire youth and beauty, but sexy is about attitude and action.
The confidence in the actions you describe is *hot* (regardless of whether a person has a "mommy body").