Jessica Biel brought the sexy back. Not only the back, but the side boob too.

Biel stunned onlookers when she arrived on the red carpet for the Los Angeles premiere of "Hitchcock" in a backless Gucci gown on Tuesday, Nov. 20. The 30-year-old gave an eyeful of side cleavage with an upswept hairstyle, while also flaunting her athletic body with a toned back.

At the event, the actress told US Weekly who she would love to work on a film with: her husband.

"I absolutely adore him. I actually would prefer him to direct me in something," Biel said of Justin Timberlake. "I think that would be the way to go."

Later, she swapped the dramatic gown for a short white dress for the premiere's afterparty.

View Jessica Biel's side boob in her backless Gucci gown here.

On Sunday, Nov. 18, she attended the New York City premiere of the film, but failed to impress the crowd with a questionable ensemble. The "Total Recall" actress wore a sheer, silver top and matching pants by Oscar de la Renta.

Biel plays one of late Alfred Hitchcock's favorite actresses, Vera Miles, in the biopic with Anthony Hopkins, Helen Mirren and Scarlett Johansson. The film focuses on the making of his 1961 classic "Psycho."

Biel and Timberlake wed on Friday, Oct, 19. at the the Borgo Egnazia resort in southern Italy. The pair reportedly flew in 100 guests who included close friends and family. The world got a good look at Biel's pink wedding dress in People magazine the following week.

In the issue, the newlyweds opened up for the first time about their special day and shared exclusive photos.

"It was a really special evening," Timberlake told People. Biel couldn't agree more and added that the ceremony "was a total fantasy experience."

Biel walked down the aisle in her custom-made pastel pink Giambattista Valli Haute Couture gown. "The Social Network" actor wore a Tom Ford tuxedo that he helped design. The singer-turned-actor also strummed a guitar and sang a new song written just for the special occasion. 

"It was an original piece I wrote specifically for the evening and for her," said Timberlake.