Underwear as outerwear! Hilary Duff shows off her lace brassiere wearing sheer top while shopping in LA

She has been hitting the gym hard of late, and it looks like the efforts are paying off for singer Hilary Duff.

The star was out shopping in LA on Thursday and while showing off her trim figure may have revealed just a little too much in the decolletage department.

The 27-year-old's black vest top appeared see through and showed off her lace brassiere beneath.  

I can see-through you! Hilary Duff revealed possibly more than she intended when she was out shopping in LA on Thursday

I can see-through you! Hilary Duff revealed possibly more than she intended when she was out shopping in LA on Thursday

Deliberate mistake? The 27-year-old's black vest top appeared see through and showed off her lace brassiere

Deliberate mistake? The 27-year-old's black vest top appeared see through and showed off her lace brassiere

Hilary was smiling as she sauntered down the street, so it may have been the star deliberately meant to embrace the trend of underwear as outerwear.

The blonde wore her cascading locks down and out in a wavy style, underneath a wide brimmed blue hat.

She had a Chanel chain bag slung over one shoulder and wore a pair of black skinny jeans which were fashionably ripped at the knee.

Happy go lucky: Hilary was smiling as she sauntered down the street, so it may have been the star deliberately meant to embrace the trend of underwear as outerwear

Tear into summer with black ripped jeans by Frame

No one can deny the power of a pair of skinny black jeans.

Trends for flares, boyfriend, printed and cropped denim may come and go but a pair of black skinnies is an absolute wardrobe essential. Depending on how you style them, they can be sophisticated, rock 'n' roll or totally laid back.

Hilary dressed hers up with some sexy cut-out heels and an edgy bold printed bomber jacket. Love. love. love.

Khloe's jeans are by Frame Denim and if you fancy stealing some A-list style then click (right) to buy a pair now at Shopbop. You can get the look for less, of course, and we've made it easy for you with our edit of high street picks below.

* PRICES MAY NOT BE AS ADVERTISED
Cover up: The blonde wore her cascading locks down in a wavy style, underneath a wide brimmed blue hat

Cover up: The blonde wore her cascading locks down in a wavy style, underneath a wide brimmed blue hat

Warmth: Hilary wore a black bomber jacket slung around her shoulders which featured a red and gold paisley print design

Warmth: Hilary wore a black bomber jacket slung around her shoulders which featured a red and gold paisley print design

Feeding the meter: She held her large Chanel chain bag in one hand as she put the coins in

Feeding the meter: She held her large Chanel chain bag in one hand as she put the coins in

The singer encased her pedicured toes in a pair of cage shoe boots.

Her jewellry was minimal with just a few bangles.

Hilary wore a black bomber jacket slung around her shoulders which featured a red and gold paisley print design.  

She stopped to feed the parking meter while she was on her shopping trip. 

In good spirits: Hilary appeared to share a joke with waiting photographers as she journeyed along

In good spirits: Hilary appeared to share a joke with waiting photographers as she journeyed along

Flashing her pearly whites: The mother-of-one giggled as she strutted along the pavement

Flashing her pearly whites: The mother-of-one giggled as she strutted along the pavement

Good times: The actress and singer held a brown food container in one hand and her keys in the other
Good times: The actress and singer held a brown food container in one hand and her keys in the other

Good times: The actress and singer held a brown food container in one hand and her keys in the other 

Currently Hilary stars on TV Land series Younger, which is set to return to TV screens with its second series in January 2016 after the first received positive reviews. 

The show marks Hilary's first starring role in a television series since her appearance as Lizzie McGuire in the teen sitcom of the same name which went off air in 2004.

Younger is based on the novel by Pamela Redmond Satran in which Sutton Foster stars as the main character - Liza Miller - who is a 40-year-old recently-divorced mother after her husband David (Paul Fitzgerald) left her for a younger woman.

After a makeover, Liza lands a job working alongside younger co-worker Kelsey Peters (Hilary) and the twosome strike up an unlikely friendship.

And she's off! Duff walked towards the flashing lights as she headed to her parked car

And she's off! Duff walked towards the flashing lights as she headed to her parked car

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