Kristen Stewart Wardrobe Malfunction [PHOTOS]: Flashes Sexy Black Bra on Walk with New Pet Pup, 'Twilight' Starlet 'Sexed-Up' Look Since Robert Pattinson Split?

Kristen Stewart has replaced former "Twilight" beau Robert Pattinson with a new, adorable pet pooch... as well as with a fresh, "sexed-up" style! The 23-year-old starlet was spotted walking her cute pup on the streets of LA on Sunday (July 28)... and she managed to flash her sexy black bra in the process. Now that she's a single gal, is K-Stew trying to show R-Patz what he's missing?

Stewart paired her trademark denim jeans and black sneaks with a VERY revealing, low-cut purple top. The "On the Road" beauty appeared makeup-free while flaunting a pair of classic glasses and a backwards baseball cap. The laidback style was nothing too special or out-of-the-ordinary... other than the fact that K-Stew's skimpy bra was on full display!

Check out the photos from Stewart's LA outing here.

Obviously, the minor fashion "mishap" was intential (hey, at least K-Stew was wearing a bra under that sheer tank top).

Stewart debuted a very similar "you can see my black bra through my skimpy shirt" look (but with a white tee) earlier this month... check out those pics here.

K-Stew seems to be doing pretty well since breaking up with R-Patz earlier this summer. But is there a reason she's dressing a tad bit sexier these days... or do Mstars fans not see a difference in her tomboy-esque style? Maybe Pattinsons' new-found Hollywood "playboy" status has something to do with it...

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Meanwhile, K-Stew currently keeps busy filming the new drama "Camp X-Ray" - a 2014 flick about "a soldier assigned to Guantanamo Bay who befriends a man who has been imprisoned there for eight years."