Jessica Chastain again proves herself as the best: this time by the dress

Beautiful Jessica Chastain

Coming 2012 films "The Wettest County" and "Madagascar 3: Europe's Most Wanted" actress Jessica Chastain was chosen the best dressed celebrity at this year's Oscars according to data compiled by the awards from Twitter.

Chastain, 30, attended the 84th Annual Academy Awards in L.A. Sunday wiht her grandma Marilyn. "I am so proud," Marilyn told E! News' Ryan Seacrest. "You just can't believe how big and tall I am right now." She was a show stopper in a black and gold Alexander McQueen gown and Harry Winston jewels, while her grandma wore a design by Marina Rinaldi.

According to the official site of this year's Oscars, http://oscar.go.com, Twitter users thought Jessica Chastain was the ‘best dressed' at this year's awards, a conclusion based upon tweets sent regarding the awards ceremony with the hashtag ‘BESTDRESSED'.

Michelle Williams, who wore Louis Vuitton, came in second place on the Best Dressed list, while Emma Stone, star of The Help, came in third place wearing a floor-length red Giambattista Valli Haute Couture gown adorned with bows. Fifth place went to Muppets star Miss Piggy who turned Kermit's head wearing a bespoke Zac Posen gown.

The top five ‘Best Dressed' celebrities at this year's Oscars, according to data taken from Twitter and compiled by http://oscar.go.com were :

01.   Jessica Chastain

02.   Michelle Williams

03.   Emma Stone

04.   Penelope Cruz 

05.   Miss Piggy 

Jessica Chastain on red carpet