Sandra Bullock Flashes Bra; Shows Sexier Side at London Premier of 'The Heat' [PHOTOS]

Hollywood starlet Sandra Bullock made a serious fashion statement on the red carpet this week by wearing a super sexy black dress and giving photogs a little sneak peak of the underwear she wore with it.

Bullock wore a backless black Victoria Beckham gown to the London premier of her new movie "The Heat", showing off just a little bit of her silky bra.

Bullock was stunning with messy waves, a super fit body and strappy stilettos, making for a sexier look than fans are normally used to seeing, The Huffington Post reported.

Check out the photos here.

Is the Bullock reintroducing herself to the world as a sultrier star? Just Wednesday the 48-year-old actress was photographed in a skin-tight Monique Lhuillier dress, paired with red heels while on her way to dinner at Nobu.

Bullock got close to her co-star Melissa McCarthy early on while fliming "The Heat", as the two bonded over motherhood, according to a recent interview in Parade magazine.

"Having kids connected us on a deeper level," she said. "And the things we're obsessed with outside of being a mom are the same, too: construction and house renovation... We're kindred spirits in that world. If we had a beer den, with Barcaloungers - but our version of that - it'd be great."

To which McCarthy replied: "There'd be fabric swatches everywhere. And reclaimed wood."

McCarthy recently told the New York Times that Bullock, though gorgeous, is actually tougher than she looks and should not be confused with the roles she has played in the past.

"She's tiny but she's mighty and she would push back," said McCarthy to The Times. "It was a true fight to the death.

"She will go for the jugular and, if you're delicate about it, you're going to sink," joked McCarthy in the interview. "So you fire back - you go for the carotid artery."

In the same article Bullock shared that another reason she and McCarthy quickly became acquainted with each other was because each understood there was no room for self-doubt.

"You don't have time to let any insecurity creep in," Bullock told the newspaper. "The first day was like, '[Okay], we're not saying anything that's on the page.' Then we got into a slap fight."