PHOTOS: The Oscars 2012 Red Carpet Roundup!

There are plenty of awards shows, but they're all amateur hour compared to the biggest show of all:The 2012 Oscars.

What dress you wear, therefore, goes down in fashion history. Which actresses will land onthe Best Dressed listand which will, sadly, find their photos designated asThe Worst?

We've got all the pics below so you can decide for yourself. Check out our continually updated slideshow and vote on your favorite dresses of the night!

See Stylelist's picks for theOscars 2012 best-dressedandOscars 2012 worst-dressed. Along with thebest and worst Oscars 2012 hair and makeup.

Angelina Jolie in Atelier Versace

Meryl Streep in Lanvin

Gwyneth Paltrow in Tom Ford

Natalie Portman in vintage Christian Dior Couture from Spring 1954 & Harry Winston

Viola Davis in Vera Wang

Michelle Williams in Louis Vuitton

Sandra Bullock in Marchesa

Emma Stone in Giambattista Valli & Louis Vuitton

Jessica Chastain in Alexander McQueen

Rooney Mara in Givenchy Haute Couture

Cameron Diaz in Gucci

Penelope Cruz in Armani Prive & Chopard

Stacy Keibler in Marchesa & Judith Leiber

Rose Byrne in Vivienne Westwood

Jennifer Lopez in Zuhair Murad

Octavia Spencer in Tadashi Shoji & Neil Lane

Melissa McCarthy in Marina Rinaldi & Chopard

Shailene Woodley in Valentino & Harry Winston

Leila Hatami

Sarah Hyland

Livia & Colin Firth

Sacha Baron Cohen, a.k.a. The Dictator, in "John Galliano" and Kmart

Tina Fey in custom Carolina Herrera

Princess Charlene & Prince Albert II

Anna Faris in Diane Von Furstenberg

Kristen Wiig in J. Mendel & Neil Lane

Kate Mara

Glenn Close in Zac Posen

Kelly Ripa

Esperanza Spalding

Busy Phillips

Missi Pyle

Leslie Mann in Roberto Cavalli

Julia Ormond in David Meister

Maya Rudolph in Johanna Johnson & Neil Lane

This article originally appeared on HuffPost.