Sandra wore Vera Wang to the People's Choice Awards.
For the Academy Awards, she chose Elie Saab.
Bullock promoted 'The Heat' in Roland Mouret.
Sandra wore Victoria Beckham to the gala screening of 'The Heat' in London, England.
Sandra looked cool in Michael Kors and ASOS at a premiere for "The Heat" in Berlin, Germany.
She chose this vibrant Prabal Gurung dress for the Boston premiere of "The Heat."
Sandra appeared on the "Today" Show in black and cream with lace accents.
It was all leather and strappy sandals for the New York premiere of "The Heat."
Sandra visited the Tonight Show with Jay Leno wearing a cool lacy Azzaro dress.
Sandra posed in Alberta Ferretti during the 'The Heat' photo call in Sydney, Australia.
Bullock attended the Australia premiere of 'The Heat' wearing an embellished Emilo Pucci dress.
Bullock stepped out in Los Angeles wearing a pair of lust-worthy Helmut Lang leather leggings.
Sandra was radiant in red Roland Mouret during a preview of "Gravity" at Comic Con.
For the Teen Choice Awards she chose a fun Antonio Berardi mini dress.
Our favorite look that Sandra wore this year, she stole the show at the "Gravity" photocall during the Venice Film Festival wearing Alex Perry.
For the "Gravity" premiere and opening ceremony of the Venice Film Festival, she wore J. Mendel.
Sandra attended the 'Gravity' premiere at the Toronto Film Festival wearing Narciso Rodriguez.
The star wore a graphic pink printed Roland Mouret dress at the Toronto Film Festival.
Sandra marked her hands and feet at the TCL Chinese Theatre wearing an Antonio Berardi dress and Jimmy Choo pumps.
Sandra visited Jay Leno wearing a navy and orange Vionnet dress.
For the New York Premiere of "Gravity," Bullock donned a chic draped mini dress from the Giambattista Valli Resort 2014 collection.
She stepped out in a t-shirt and her Helmut Lang leather leggings in New York City.
Bullock attended the USC Shoah Foundation Institute 2013 Ambassadors for Humanity gala wearing a black and white strapless dress.
Sandra stunned in Stella McCartney at the BFI London Film Festival.
Bullock attended the Hollywood Film Awards wearing Dsquared².
She looked pretty in lace and leather at a screening and Q&A for "Gravity" in Los Angeles.
For the Tokyo press conference for "Gravity," Sandra wore a vibrant Roland Mouret dress.
For the Tokyo 'Gravity' premiere, Sandra chose Carolina Herrera.
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Sandra Bullock spent much of 2013 promoting two movies: the hilarious "The Heat" and the insanely gripping, riveting "Gravity." She graced many a red carpet at film premieres and film festivals across the world.
To us, she was one of the best dressed stars of 2013. She's pretty loyal to Roland Mouret but stepped out in many other designers -- keeping the level of chic and class consistent. Lots of lace and leather accents, she's consistently on-trend. Click through the gallery above to see her stunning year of style!