Jessica Alba stepped out looking stunning in a strapless electric blue dress by Zac Posen at the premiere of her new film,?Sin City: A Dame To Kill in Hollywood.

Jess took edgy to the extreme in this all-black semi formal dresses at the Guys Choice awards in June.

The 33-year-old, who was accompanied by husband Cash Warren, paired the bright number with silver heels.

Over the years the actress has become a fashion favourite and manages to nail every look from head to toe. Who could forget her burgundy number at the 2008 Academy Awards or her dazzling gold gown at the 2011 Metropolitan Museum Costume Institute Gala?

This year the mother-of-two hasn't disappointed and has been a knockout at almost every red carpet event. Here is a rundown of Jess's best looks of 2014 so far.