Hmm, why does this girl look so familiar?
Well, that's because it's none other than our very own Giuliana Rancic, who found herself part of E! News' prom week when this vintage photo was revealed on Thursday's show.
"You know what, Jason? I was ahead of my time," Rancic told cohost Jason Kennedy with mock seriousness. "Let me explain something to you. I'm all about the high-low trend, which is very in style right now, so even back then, a hundred years ago, I was high-low."
She playfully added, "Pearls and Swatch, what do you want from me? It's actually a good thing. I'm proud of my prom picture."
Of course, the Giuliana & Bill star isn't the only famous face whose past has come back to haunt them offer up some fond memories.
"You look exactly the same! How is that possible?" Kimmel exclaimed. "It really is remarkable!"
"That's the beginnings of a mullet, I feel," Hamm commented on the picture, which also revealed that his date to the dance was The Tomorrow People actress Sarah Clarke. "We can't quite tell what's going on in the back."