Actress Scarlett Johansson arrives at the Vanity Fair Oscar party hosted by Graydon Carter held at Sunset Tower on February 27, 2011 in West Hollywood, California. (Getty Images)more pics » 
Sandra Bullock (Getty Images) Always the fashion maverick, Scarlett Johansson looked sultry in this long all-lace maroon number, with an opened back. She's just coming off of her separation from hubby Ryan Reynolds, and looks like she's ready to take Hollywood by storm.The actress arrived at the show on the arms of Jeremy Renner, with whom she looked ultra-cozy on the red carpet. But not everything was warm and cuddly for the actress: she purposely was avoiding Ryan Reynold's rumored rebound girl, Sandra Bullock. (The two were also once good friends while both married.)
"It seemed like both of their arrivals were carefully staged to make sure they were never on the red carpet together," an insider told Popeatar.com. "They both knew the other was presenting so it was no surprise that they would be at the same event, but they sure managed to keep away from one another."
See more Scarlett Johansson pictures:
Best Dressed at the 2011 Oscars If there's any night Hollywood gets truly glamorous, it's Oscars night. See which stars were big winners on the red carpet at the 2011 Academy Awards!
Who was best dressed at the 2011 Oscars? 