Getting into character for a movie role isn't just about putting on a costume and memorizing lines. Celebrities sometimes need to gain or lose a couple of pounds too--or maybe 40 to 50 of them!

Matthew McConaughey recently lost 30 pounds to play the role of a character with HIV in the upcoming movie The Dallas Buyers Club, but that's not out of the ordinary in Hollywood. A-listers are often asked to go the extra mile for their mega-paychecks by gaining or losing crazy amounts of weights in a short period of time, which leads to a whole bunch of methods no doctor would ever advise! From Beyonce to Ryan Gosling, check out the 14 craziest celebrity weight losses and gains of all time!

What weight gaining actor had beer and McDonald's as a daily in-between meal while on set? Find out after the jump!

Happy Monday, Hollywire fans!! The Golden Globes were this weekend (aka Hollywood's biggest party), which is why this week's Weekend Rumor Mill is dedicated to the event. We've got the reasons why Jennifer Lopez pulled out of presenting duties, Lindsay Lohan crashing both Pre- and Post-Globes parties, Elton John's husband slamming Madonna's win, Ashton Kutcher and Demi Moore run-in, and Emma Roberts making a move on... Jared Leto!

Read on to hear all the deets!!

Have plans for New Years 2011 yet?

Well how about spending it in Las Vegas with a special performance from Thirty Seconds To Mars?!

 Jared Leto, not bad!