Never one to shy away from controversy ... Sacha Baron Cohen arrived at The Oscars in character from his upcoming film The Dictator.

The 40-year-old actor, who was carrying an urn of Kim Jong Il's "ashes," actually emptied the contents on Ryan Seacrest's tux during their interview. OMG!

Cohen had reportedly been banned from attending the ceremony in character, but later in the week, the Academy gave him the ok to walk the carpet in costume.

Talk about great publicity for the film!

Emma Stone looked stunning in a show-stopping red Giambattista Valli Haute Couture gown, paired with Brian Atwood heels and Fred Leighton jewelry, at the 84th annual Academy Awards, on Sunday evening.

The 23-year-old actress isn't nominated this year, but she is presenting tonight!

Stone is also there to support her hit film, The Help, which is nominated for Best Picture, and three of her co-stars Jessica Chastain and Octavia Spencer are both up for Best Supporting Actress, while Viola Davis is nominated for Best Actress.

Octavia Spencer walked away with the Best Supporting nod tonight. Congrats!

For her very first Oscar appearance, Best Supporting Actress nominee Jessica Chastain went for a Royal look by choosing Kate Middleton's wedding dress design house, Alexander McQueen, for her gorgeous red carpet gown!

Chastain, who is nominated for her work in The Help, accessorized with Harry Winston jewels, and brought along her grandma Marilyn as her date!

Unfortunately, Jessica lost out on the Oscar to her Help costar, Octavia Spencer.

Viola Davis looked picture perfect in her custom green Vera Wang dress as she walked the red carpet with husband Julius Tennon. The bejeweled bustline is definitely fitting for the star-studded event.

Ms. Davis also flaunted her Lorraine Schwartz jewelry, Judith Leiber clutch and Jimmy Choo heels. Workin' it!

The 46-year-old actress, who is nominated in the Best Actress category for her role in The Help, is up against Rooney Mara, Meryl Streep, Glenn Close and Michelle Williams.

Yikes! That's some stiff competition. May the best woman take home the golden statue.

Taking the plunge in a dazzling ivory Givenchy gown with a deep V-neckline and sparkling Fred Leighton jewels, Oscar nominee Rooney Mara took our breath away when she arrived at the 2012 Oscars in Hollywood, on Sunday.

The 26-year-old actress is nominated for her role as Lisbeth Salander in The Girl with the Dragon Tattoo, but she's got some stiff competition tonight!

Mara recently revealed to USA Today of the sole requirement for her Oscar dress, "I don't think about it [choosing a dress] in terms of what people say or like or think. I try to find something that I feel comfortable in. I do like fashion, but if it's not comfortable, I won't wear it."

Ashley Tisdale and boyfriend Martin Johnson are continuing their nouveau grunge theme ... with matching all-black ensembles for a coffee run.

We pointed out the other day, how Ash has adopted her b-friend's style (like Jennifer Aniston copped her boyfriend Justin Theroux's look). But we'd like to point out how the young fashionista adds a twist to the look with a fire engine-red Chanel bag! What Roxy regular would carry THAT down the Sunset Strip?!

Amy Adams took daughter Aviana out with baby daddy Darren LeGallo, on Saturday. Amy's daughter was excited about a squirrel she saw in the distance ... adorable!

Aviana was named after Adams' birthplace in Italy. Her father was stationed abroad, before returning to the US and settling in Colorado with Amy's six siblings.

Another interesting fact ... while Amy was a struggling actress, getting her start in Atlanta, she held part-time jobs at The Gap and at Hooters! She quit after three weeks and later described the experience this way: "... there was definitely an innocence to my interpretation of what Hooters was about. Though I did learn, quickly, that short shorts and beer don't mix!"

With her new, cropped 'do and her cropped cigarette-style jeans, heels and leather jacket, Cameron Diaz is certainly workin' it!

The actress grabbed a coffee after a hard night of pre-Oscar partying at the CAA shindig Friday night.

What do you think of the 39-year-old's new look?