Derek Hough Joins the Cast of Nashville, Plus More Celeb News!

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:

Ariana Grande reveals that being a star on Nickelodeon was sometimes "frustrating." (People)

What's this!? Derek Hough is joining the Nashville cast. (Us Weekly)

Have you seen that video of Reese Witherspoon dancing yet? Girl has moves! (E!)

Simon Cowell's production company is making a Betty Boop movie. (Vulture)

Anna Kendrick says she's not dating that Game of Thrones star. She tells all on Twitter. (Entertainment Tonight)

Check out the new photos from Downton Abbey's 5th season. (Entertainment Weekly)

Yes, you can buy a T-shirt that is decorated with all of Kim Kardashian's crying faces. (ImNotObsessed)