Hollywood's biggest night is finally here. Before everyone heads inside the Kodak Theatre in Los Angeles for the 84th annual Academy Awards, celebrities walk the red carpet, pose for the hundreds of waiting photographers and have a chat with the reporters.

From Hollywood's power couple Brad Pitt and Angelina Jolie to excited up-and-comers like Jessica Chastain and Shailene Woodley, it does not get any bigger than this when it comes to the star-studded event. While the Academy will announce their winners inside, fashion's top stars are being decided on the red carpet.

Two is better than one for these glamorous pairs. The 84th Academy Awards is a fantastic place for Hollywood's elite to get together with friends and family. Whether they publicly show affection with their significant other on the red carpet or meeting old friends inside, the ceremony definitely brings together some great couples. Take a look at these lovely couples on this prestigious event at the Kodak Theatre, Los Angeles.

George Clooney, best actor nominee for his role in "The Descendants," and his girlfriend Stacy Keibler on the Oscars red carpet Sunday.ReutersReuters

Actor James Cromwell, from the best picture nominated film "The Artist," arrives with guest Anna Stuart at the 84th Academy Awards in Hollywood, California, February 26, 2012.

Irish-Born, English Actor, Kenneth Branagh, best supporting actor nominee for his role in "My Week with Marilyn", and his wife, Lindsay Brunnock arrive on the red carpet at the 84th Academy Awards in Hollywood, California, February 26, 2012.

Melissa McCarthy, best supporting actress nominee for her role in "Bridesmaids," and her husband, Ben Falcone, arrive at the 84th Academy Awards in Hollywood, California, February 26, 2012.

British actor Gary Oldman, best actor nominee for his role in "Tinker Tailor Soldier Spy", and his wife Alexandra Edenborough arrive at the 84th Academy Awards in Hollywood, California, February 26, 2012.

Brad Pitt and Angelina Jolie made a glamorous entrance at tonight's 84th Academy Awards in LA. Angelina is presenting the award for original screenplay tonight and Brad is nominated for Best actor in “Moneyball.”

Benjamin Millepied and actress Natalie Portman, wearing a diamond necklace and drop earrings from Harry Winston, arrive at the 84th Academy Awards in Hollywood, California, February 26, 2012.

Actor Colin Firth and Livia Giuggioli arrive at the 84th Annual Academy Awards.

Christopher Plummer (L) won the best actor in a supporting role.

Actress Melanie Griffith and her husband, actor Antonio Banderas, arrive at the 84th Academy Awards in Hollywood, California, February 26, 2012.