Yolanda Hadid is joined by children Gigi, Bella and Anwar

No doubt all three feature prominently in her memoir.

So it was fitting Yolanda Hadid’s children were on hand to support her book signing in New York on Wednesday.

Gigi, Bella and Anwar were first in the queue at Barnes And Nobel to get their hands on a copy of Believe Me.

Family support: Yolanda Hadid’s children Gigi, Bella and Anwar were on hand to support her book signing in New York on Wednesday

The 53-year-old matriarch of the gorgeous family showcased those good genes in a tight black top and form-fitting houndtooth skirt.

Gigi, 22, matched her mom’s colors in a tight black polo neck and grey athletic pants.

Bella, 20, flashed some cleavage in a corset top, which she paired with a two-piece pin-stripe suit and red military hat.

Hot mama: The 53-year-old matriarch of the gorgeous family showcased those good genes in a tight black top and form-fitting houndtooth skirt

Hot mama: The 53-year-old matriarch of the gorgeous family showcased those good genes in a tight black top and form-fitting houndtooth skirt

Baby: Anwar, 18, rocked a black skinny tie with a white button-up shirt, and collar-less denim jacket

Baby: Anwar, 18, rocked a black skinny tie with a white button-up shirt, and collar-less denim jacket

Odd one out: The family all looked ecstatic with their copies (except Anwar) 

Odd one out: The family all looked ecstatic with their copies (except Anwar) 

Middle child: Bella, 20, flashed some cleavage in a corset top, which she paired with a two-piece pin-stripe suit and red military hat

Middle child: Bella, 20, flashed some cleavage in a corset top, which she paired with a two-piece pin-stripe suit and red military hat

Anwar, 18, rocked a black skinny tie with a white button-up shirt, and collar-less denim jacket. 

The book, subtitled My Battle with the Invisible Disability of Lyme Disease, details the former Real Housewife’s struggle with the disease itself, as well as the lack of belief from her supposed group of friends.

Lack of understanding about Lyme – a bacterial infection spread primarily by deer ticks – has long been a cause of frustration for Yolanda, especially among her former  Real Housewives Of Beverly Hills castmates, who had each been skeptical to varying degrees. 

Eldest: Gigi, 22, matched her mom's colors in a tight black polo neck and grey athletic pants

Eldest: Gigi, 22, matched her mom’s colors in a tight black polo neck and grey athletic pants

Believe Me: The book, subtitled My Battle with the Invisible Disability of Lyme Disease, details the former Real Housewife's struggle with the disease itself, as well as the lack of belief from her supposed group of friends

Believe Me: The book, subtitled My Battle with the Invisible Disability of Lyme Disease, details the former Real Housewife’s struggle with the disease itself, as well as the lack of belief from her supposed group of friends

Holding on: Gigi was later spotted leaving the store book in hand

Holding on: Gigi was later spotted leaving the store book in hand

Holding on: Gigi was later spotted leaving the store book in hand

Pout: Bella looked a bot broody upon exiting

Pout: Bella looked a bot broody upon exiting

Snap: Both she and her sister rocked very similar eyeliner for the evening

Snap: Both she and her sister rocked very similar eyeliner for the evening

Snap: Both she and her sister rocked very similar eyeliner for the evening

Yolanda is also currently promoting her new show, as she’s due to star in Model Moms on Lifetime. 

The Dutch model this year finalized her divorce from David Foster, whom she married in 2011.

She was previously married to Mohamed Hadid, the father of her three children, from 1994 to 2000.

Support: Bella had been excitedly plugging her mom's book on Instagram

Support: Bella had been excitedly plugging her mom’s book on Instagram

Captured: She shared clips of her mom dishing out autographs

Captured: She shared clips of her mom dishing out autographs

Read more at DailyMail.co.uk