OK! Wake Up Call: It's Earth Day, Jack Nicholson's Bday, and More!

Rise and shine, pop culture fans! Rub your eyes, get to stretchin', and pour yourself a hot cup of coffee because it's time to start your day off right with a little OK! Wake Up Call. It's better than the blaring ring from your alarm clock, right? 

Here are some things to know today:

What Would Ryan Lochte Do? premiered last night. He's talking about it today on The TODAY Show. (Twitter)

It's Earth Day, and we've got a tweetstakes that will make you feel like you're in the great outdoors, even if you're stuck in your cubicle. (OK!)

E! reports that The Real Housewives of Beverly Hills has a confirmed Season 4! Are you jumping for joy? We are! Now only if we could figure out who the newbee will be. (E!)

RHOA star Kenya Moore talked to Perez Hilton about her new fitness DVD. Summer is comin'! (Perez Hilton)

Got a sweet tooth? It's National Jelly Bean Day—and that's definitely something to celebrate. Our fave kind is Jelly Belly. (Jelly Belly)

Megan Draper, once again, stunned us with her ensemble on Mad Men. And we're not talking about her acting skills. Check out these pics! (AMC)

Happy Birthday, Jack Nicholson! This guys turns 76 today. Did you ever see this funny video of Jack and Jennifer Lawrence?  (Youtube)

Yesterday was Kris and Bruce Jenner's 22nd Wedding Anniversary. The Kardashian clan were all over Instagram with cute pictures!  (Instagram)

Speaking of anniversaries, LeAnn Rimes and Eddie Cibrian are celebrating theirs today. (Radar)

What are you excited about today? Will you enter our tweetstakes? Tweet @OKMagazine and let us know!