OK! Wake Up Call: Kate Winslet's New Flick, Jason Priestley Turns Author, 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:

This One Direction star deserves a standing ovation. Get ready for it—Liam Payne debuts his core. (Us Weekly)

Jason Priestley is diving into the world of literature. The celeb has a book deal! (Perez Hiltion)

Hollywood ladies don't stop getting their fitness on just because they are preggers. Check out the adorable Jennifer Love Hewitt working out and lookin' fabulous. (E!)

Kate Winslet in a drama? Oh, it's gonna be good. The gorgeous gal is joining the cast of The Dressmaker. (Vulture)

Happy Birthday, Anna Kendrick! The Pitch Perfect "Cups" singer turns 28 today! Sing her a acapella version of the classic song, or maybe just send her a fabulous tweet. (Twitter)

Remember when Jennifer Aniston wore that stunning red gown? How could you not!? (MSN)

Orlando Bloom sits on a motorcycle and smooches a gal who isn't Miranda! Get the deets here. (Pop Sugar) 

Hear Katy Perry roar! What do you think of her new single cover? (E!)