Business is booming.

Poppy Delevingne displays her taut midriff in a knitted coord at Edward Enninful’s book launch

Poppy Delevingne shows off her tight midriff in a satin bra at Edward Enninful’s book launch – amid claims her family is planning an intervention for sister Cara

<!–

<!–

<!–<!–

<!–

<!–

<!–

Poppy Delevingne had her taut midriff in full view when she stepped to the book launch of Edward Enninful’s A Visible Man in Los Angeles on Tuesday.

The 36-year-old model looked sensational at the event as she stepped outside amid claims her family is planning an intervention for her sister, Cara.

She caught a glimpse of her satin bra and matching high-waisted briefs in the semi-sheer matching set that included flared trousers and an open cardigan.

Chic: Poppy Delevingne, 36, had her taut midriff on full display as she stepped to the book launch of Edward Enninful's A Visible Man in Los Angeles on Tuesday

Chic: Poppy Delevingne, 36, had her taut midriff on full display as she stepped to the book launch of Edward Enninful’s A Visible Man in Los Angeles on Tuesday

Poppy caused a storm in the striped ensemble which she paired with a pair of heeled boots.

She wore her bright blonde locks loose in tousled curls and opted for a radiant makeup palette.

She smiled sweetly for some snaps when she later joined author Edward as well as Alessandra Ambrosio, Tobey Maguire and Orlando Bloom.

Radiant: She caught a glimpse of her satin bra and matching high-waisted briefs in the semi-sheer matching set as she posed with businesswoman Emma Grede

Radiant: She caught a glimpse of her satin bra and matching high-waisted briefs in the semi-sheer matching set as she posed with businesswoman Emma Grede

Radiant: She caught a glimpse of her satin bra and matching high-waisted briefs in the semi-sheer matching set as she posed with businesswoman Emma Grede

Fans of Poppy’s sister Cara have expressed concerns for the star after she saw her smoking some pipe while sitting alone in a car last week and then looked erratic and out of place at Los Angeles’ Van Nuys Airport on Monday.

Now her friends and family look for ways to help the troubled former “it girl.”

“We are all incredibly concerned. The situation has been building for a few weeks now and Cara’s family is involved,” a close friend told The sun on Wednesday.

“There is talk of setting up some sort of intervention and making sure Cara gets the help she may need,” the person added. “She’s been burning the candle at both ends lately and it’s clearly taking its toll.”

Friends: She smiled sweetly for some snaps when she later joined author Edward, as well as Alessandra Ambrosio, Tobey Maguire and Orlando Bloom (LR Alessandra Ambrosio, Edward, Tobey Maguire, Orlando and Poppy Delevingne)

Friends: She smiled sweetly for some snaps when she later joined author Edward, as well as Alessandra Ambrosio, Tobey Maguire and Orlando Bloom (LR Alessandra Ambrosio, Edward, Tobey Maguire, Orlando and Poppy Delevingne)

Friends: She smiled sweetly for some snaps when she later joined author Edward, as well as Alessandra Ambrosio, Tobey Maguire and Orlando Bloom (LR Alessandra Ambrosio, Edward, Tobey Maguire, Orlando and Poppy Delevingne)

Delevingne made her last troubling appearance in Los Angeles last Monday, appearing confused and nervous before boarding Jay-Z’s private jet.

According to DailyMail.com sources, the cover girl seemed unable to control her body movements at certain points as she was seen on the phone, bending over, dropping her phone and walking around walking around very nervous and as if she couldn’t stop moving. .

Recently, Delevingne spent some time at the Burning Man festival in Nevada’s Black Rock desert. Sources told DailyMail.com at the time that she did not eat or shower during the event.

Concerned Family: Fans of Poppy's sister Cara have expressed concern for the star after she was seen erratic (Cara pictured on September 5)

Concerned Family: Fans of Poppy's sister Cara have expressed concern for the star after she was seen erratic (Cara pictured on September 5)

Concerned Family: Fans of Poppy’s sister Cara have expressed concern for the star after she was seen erratic (Cara pictured on September 5)

The source said, “She’d just spent days in the desert, not eating much and looking untidy because she hadn’t had time to scrub herself.”

He continued: ‘Her friends are generally concerned about her after some erratic behavior, but she has a good group around her. Her sister was with her at the festival. She wasn’t alone and she has her back.’

The source continued: ‘Burning Man isn’t full of burger vans like at other festivals. You throw everything you need into a motorhome and you have to live on that while you’re there. Everything works on a switch system.’

Sisterly Help: Cara'a friends and family look for ways to help troubled former 'it girl' amid claims her family is considering intervention (pictured together in 2019)

Sisterly Help: Cara'a friends and family look for ways to help troubled former 'it girl' amid claims her family is considering intervention (pictured together in 2019)

Sisterly Help: Cara’a friends and family look for ways to help troubled former ‘it girl’ amid claims her family is considering intervention (pictured together in 2019)