Katie Holmes rocks a pouf hairstyle on the set of Woman in Gold that looks like Snooki's famed hairstyle from Jersey Shore. Credit: PacificCoastNews; Jeffrey Ufberg/WireImage.com

It's back!

Katie Holmes rocked a very familiar hairstyle while filming Woman in Gold in Los Angeles on July 15.

The voluminous half-up, half-down hairstyle looked curiously like the infamous pouf that Nicole "Snooki" Polizzi wore during the early seasons of Jersey Shore. Instead of just one gravity-defying pouf, though, Holmes, 35, had three bumps to the 'do.

The comparison to the MTV reality star, now mellowed out and pregnant with her second child, stopped with the hair. Holmes, who plays the wife to Ryan Reynolds' character Randol Schoenberg, paired the bouffant with a black-and-white belted dress.

The movie, which also stars Helen Mirren and Elizabeth McGovern, follows a World War II survivor as she tries to retrieve family possessions that were stolen by the Nazis.