Interestingly, Kim isn't wearing her wedding ring in them, so it's not clear when they were taken!
She lucked out though because
SPOILER ALERT: If you don't want to know what happens at the end of Captain America: The First Avenger, then move on to another story NOW! Otherwise…
Check out the ultra-short teaser (above) which shows some of the ending to Captain America, and includes a teaser-for-the-teaser of The Avengers, which plays after C.A. in theaters.
This looks GREAT, and it's nice to have an actual trailer to watch! That bootleg one was starting to hurt our eyes.