What: ScarJo rocked as many Spring trends as she possibly could in an embroidered dress by Prada. Floral print? Tick. Peplum? Tick. Lace detailing? Tick. As for her hair and makeup, Heidi-inspired hair isn't exactly on trend, but we like the style paired with her glossy red lip colour, (which also happened to match perfectly with co-star Cobie's dress). Smulders literally smouldered again, this time in a floor-sweeper by Alexandra Vidal paired with a chic updo and the latest red carpet staple - the humble hair band.
Where: The Avengers premiere, Westfield, London, 19 April
Verdict: Scarlett's Prada number is definitely an improvement on the plunging LBD from the Moscow premiere earlier this week and she gets extra fashion points for the best colour co-ordination we've ever seen on the red carpet.
ScarJo. Photo: Getty Images
So how do you rate Scarlett and Cobie's premiere style? Let us know in a comment and see more from Johansson in her perfect 10 below.

Cobie smoulders. Photo: Getty Images
- June 2011<p> Scarlett teamed a black-and-white, one-shouldered Valentino dress with strappy heels at the Spike TV Guys Choice Awards. </p>

- April 2011<p> Scarlett wore a teal dress when she attended the White House Correspondents' Association dinner.</p>

- February 2011<p> At the 83rd Academy Awards, Scarlett wore a figure-hugging, lace, Dolce & Gabbana dress.</p>

- January 2011<p> Scarlett opted for a pale pink/peach Elie Saab gown and Jimmy Choo sandals for the 68th Annual Golden Globe Awards. </p>

- June 2010<p> Scarlett in another Elie Saab number at the 64th Annual Tony Awards. </p>

- June 2010<p> Scarlett bought a splash of green to the red carpet at The 2010 MTV Movie Awards.</p>

- April 2010<p> Scarlett Johansson at the <em>Iron Man 2</em> world premiere, wearing a white Armani asymmetrical dress and glittery heels.</p>

- April 2010<p> Scarlett Johansson poses at the <em>Iron Man 2</em> photocall in a fitted, knee-length grey dress.</p>

- July 2009<p> Scarlett makes a personal appearance to promote Dolce & Gabbana makeup in head-to-toe in Dolce & Gabbana.</p>

- July 2009<p> Actress Scarlett Johansson, making her directorial debut with the short film <em>These Vagabond Shoes. </em></p>

