Button up! Bra-less Chrissy Teigen nearly exposes herself in undone chambray top while out walking with her dog Pippa.

Chrissy Teigen showed the world a little more than she likely intended to on Wednesday.

While out with her little pup Pippa, the 28-year-old Sports illustrated swimsuit model nearly exposed her chest as her chambray top found itself unbuttoned.

The wife of singer John Legend and inspiration behind his All Of Me hit single had taken one of the couple’s three dogs out for a walk around town when the wardrobe malfunction occurred.

All of her: Chrissy Teigen, 28, nearly exposed her chest on Wednesday when her top came unbuttoned. The wife of John Legend was out with one of the couple's three dogs when the wardrobe malfunction occurred

All of her: Chrissy Teigen, 28, nearly exposed her chest on Wednesday when her top came unbuttoned. The wife of John Legend was out with one of the couple’s three dogs when the wardrobe malfunction occurred

Chrissy, dressed in double-denim, paired her flimsy top with a pair of skintight faded denim jeans.

She also included a big light brown velvet hat and brown sandals for the quick jaunt with her adorable pooch.

The brunette beauty let her golden tresses – with recently added extensions – hang down naturally around her shoulders and kept her face relatively free of makeup.

As her top opened up Teigen quickly realized what had happened and did her best to secure the button with her free hand.

Chrissy Teigen arrives at Extra in a racy low-cut top (Archive)

Oops! As her top opened up Teigen - showing off her new hair extensions - quickly realized what had happened and did her best to secure the button with her free hand

Oops! As her top opened up Teigen – showing off her new hair extensions – quickly realized what had happened and did her best to secure the button with her free hand

Double-denim: Chrissy paired her flimsy top with a pair of skintight faded denim jeans. She also included a big light brown velvet hat and brown sandals for the quick jaunt with her adorable pooch

Double-denim: Chrissy paired her flimsy top with a pair of skintight faded denim jeans. She also included a big light brown velvet hat and brown sandals for the quick jaunt with her adorable pooch

Thursday marked the first time Chrissy was seen since heading out for a romantic late date at Spago restaurant in Beverly Hills on Monday, after she and John watchedthe awards show on TV.

The pair, married since September 2013, were spotted smiling in the car following their date, clearly having enjoyed their evening together.

Prior to their dinner out on the town, Chrissy shared a snap of the couple’s intimate Emmys party.

‘Basically at the Emmys #25daysofchic,’ the Sports Illustrated stunner said with an Instagram shot of their cosy setting.

Dinner date: Chrissy and John were seen heading out for a romantic late night date at Spago restaurant in Beverly Hills on Monday, after the married couple of one year watched the awards show on TV

Dinner date: Chrissy and John were seen heading out for a romantic late night date at Spago restaurant in Beverly Hills on Monday, after the married couple of one year watched the awards show on TV

Monday proved to be a eventful day as Chrissy was also challenged by pop star Selena Gomez to a dance-off.

‘Hey chrissyteigen wanna dance off?’ Selena, 22, said with an Instagram video of herself grooving to Sia’s hit song, Chandelier.

And it seems to only be a matter of time until Chrissy shows off her moves, since she responded: ‘OH HELL YEAH RT’, on Monday evening.