On the heartbreak diet? Gwen Stefani reveals thinner frame a month after splitting from Gavin Rossdale... as she gets kiss from a male friend

She was the one to call time on her relationship with Gavin Rossdale, filing for divorce after 13 years of marriage and three children.

But it seems that Gwen Stefani is still feeling the strain of adjusting to life after the shocking split.

The 45-year-old looked noticeably thinner when she was spotted in Los Angeles on Thursday, visiting Circus Gallery.

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Shrinking frame: Gwen Stefani looked noticeably thinner when she was spotted in Los Angeles on Thursday

Shrinking frame: Gwen Stefani looked noticeably thinner when she was spotted in Los Angeles on Thursday

Gwen revealed her very slender frame in a baggy black tank top with cut-out sides, showcasing her bra underneath, along with matching shorts over leggings.

The No Doubt star wore several bangles on each wrist, but one piece of jewellery that was absent was her wedding ring, which she recently removed.

Gwen slicked her platinum blonde hair into a neat bun and despite her casual outfit, finished off her look with her trademark scarlet lipstick.

Nice to see you: The pop star arrived at Circus Gallery, where she was greeted with a kiss from a male friend

Nice to see you: The pop star arrived at Circus Gallery, where she was greeted with a kiss from a male friend

The ring's the thing: Gwen, who flashed her bra in a black tank top with cut-out sides, has removed her wedding band, but wore lots of other jewellery

The ring's the thing: Gwen, who flashed her bra in a black tank top with cut-out sides, has removed her wedding band, but wore lots of other jewellery

Get an edge like Gwen in her distressed black tank top by IRO

Gwen Stefani is the queen of cool, so of course we gawp at her and take style notes every time she leaves the house.

We’re even lusting over her pared back daytime outfit in these snaps, and that’s because her distressed holey tank is by celeb fave IRO, and she’s worn the same one in the past. Gwen loves an edgy style staple!

Worn with everything from distressed boyfriend jeans to black leather trousers or denim mini skirts, this tank will do any outfit wonders and you can dress is up or down to your liking. So get clicking to the right to snap up the latest style now from Revolve Clothing for $117. It may seem steep, but this brand has been seen on pretty much every Kardashian member to Olivia Palermo, so it's worth investing in.

If you want the look for less, simply emulate Gwen's rocker look in the edit below from the likes of T By Alexander Wang, Nasty Gal, Forever 21 and Kain, with prices starting from just $9.99!

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The pop star was greeted by a male friend at the art gallery, and he was seen wrapping an arm around her and planting a kiss on her cheek.

Gwen is keeping busy following her break-up, and is gearing up for the new season of The Voice, which kicks off on September 21. Selena Gomez will join her as a mentor.

She has also been trying to maintain some normality for her three sons – Kingston, nine, Zuma, seven, and Apollo, 18 months – and has been spotted spending lots of time with them.

Shock split: The 45-year-old filed for divorce from Gavin last month. She is looking noticeably thinner than she did before the break-up (pictured here in December)

Shock split: The 45-year-old filed for divorce from Gavin last month. She is looking noticeably thinner than she did before the break-up (pictured here in December)

Trying to maintain some normality: Gwen has been keeping upbeat for the sake of her three children after splitting from Gavin. She is pictured with Apollo, Zuma and Kingston last week

Trying to maintain some normality: Gwen has been keeping upbeat for the sake of her three children after splitting from Gavin. She is pictured with Apollo, Zuma and Kingston last week

In the wake of the split, 49-year-old Gavin has moved into a bachelor pad in Bel Air, while Gwen remains in the family home.

After the singer filed for divorce, the couple released a joint statement about the end of their relationship.

'While the two of us have come to the mutual decision that we will no longer be partners in marriage,' they said.

'We remain partners in parenthood. We are committed to jointly raising our three sons in a happy and healthy environment.'

Keeping busy: Gwen is also gearing up for the new season of The Voice, which kicks off on September 21. She is pictured with host Carson Daly (C) and fellow coaches (L-R) Pharrell Williams, Adam Levine and Blake Shelton last week

Keeping busy: Gwen is also gearing up for the new season of The Voice, which kicks off on September 21. She is pictured with host Carson Daly (C) and fellow coaches (L-R) Pharrell Williams, Adam Levine and Blake Shelton last week

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