It's been nearly 20 years since Meghan graduated Immaculate Heart, and her wedding coincidentally falls around the same time frame of her former high school's prom. In fact, according to ABC News, Immaculate Heart families "will be joining everyone on campus for a royal wedding viewing party."

So, to celebrate Meghan, take a look at her Class of '99 Graduation Playlist on iHeartRadio, which features all of the biggest hits of that year, including artists like TLC, Backstreet Boys, Shania Twain, Britney Spears, Christina Aguilera, Goo Goo Dolls, Smash Mouth, Jennifer Lopez, and so much more.

On With Mario