"The first time Steve meets Toni is about a week after he wakes up."

(Just Pre Heroic Age) - The Avengers aren't quite back together yet, things are still a little rocky between Tony Stark and Commander Rogers, and Tony's slaving away at Stark Resiliant, trying to make a fortune again to fund everyone's superhero habit, and be on his best behavior for Steve, when Maria Hill calls him with a problem... an unidentified Iron Man suit has appeared in New York City. But it's not talking.

From a prompt on Avengerkink. Thanks to a magical spell by invading aliens from another realm, Tony Stark becomes a woman...for three months. Obviously there's no way he's not going to take his new body for a test drive. And who better to help him with it that our very own Captain America, Steve Rogers, the straighter-than-a-ruler guy he's been falling in love with totally against his will and who's finally noticing him now...