Bella Hadid's family and friends have paid tribute to her in honour of her 20th birthday on Sunday (09.10.16).

Bella Hadid's birthday (c) Instagram

Bella Hadid's birthday (c) Instagram

The brunette beauty's mother Yolanda Hadid and siblings Gigi and Anwar all shared cute photographs of Bella as a youngster as they wished her a happy birthday on social media.

Yolanda posted a picture of her "sweet Angel" as a little girl and spoke of her pride in the woman she has become as she wrote on Instagram: "Happy Birthday my sweet Angel..... I pray that each day, love, health and happiness will come your way.

"Thank you for being YOU, I am so proud of all that you do and all that you are. You are my everything! #ILoveYou #MyBirthdayGirl.(sic)"

Older sister Gigi, 21, posted a picture of them both practising leg stretches out on a balcony when they were little girls.

She wrote: "Happy Birthday to my baby sister @bellahadid.

"Your beauty and beautiful heart blow me away more every day.

"You make me more proud than you'll ever know, and I feel so grateful that we get to experience so much by each other's side.

"Can't believe you're 20!!!!!!!!!!!!!!!!!!! Love ya miss ya kiss ya."

Anwar, 17, chose to share a picture of Bella as a toddler, adding the simple caption: "sis b's birthday. love you."

Bella's friends from the fashion world opted for slightly more up-to-date photos to share with their birthday greetings.

Kylie Jenner, 19, posted a picture taken from a Vogue shoot they undertook last year, and simply wrote "Happy Birthday @bellahadid" along with a heart emoji.

Supermodel Naomi Campbell, 46, shared a picture of herself and Bella looking close in a restaurant, staring at the camera.

She wrote on Instagram: "'#happybirthday darling @bellahadid this has been an amazing year for you and still more to come .. wishing you the all you desire on this special day #20 world is your oyster and im so proud of you . I love you lots N (sic)"

She accompanied the post with a number of celebratory emojis, including birthday cakes and party hats, as well as hearts and shocked faces.

Fashion photographer Russell James shared a black and white picture of Bella wearing just a leather jacket.

He captioned the image: "Happy birthday @bellahadid ! So cool to see you... such an incredible year. And the year ain't over yet! See you soon and have a fantastic day."

Meanwhile, Bella herself didn't seem to impressed to be getting older.

She moaned on Twitter: "I wanna be 18 again."

But earlier in the day, she had also shared her own throwback photo on Instagram, featuring herself as a baby with her mother.

She wrote: "20 years ago with the woman who birthed me. I love you #20 (sic)"