Happy birthday, Gigi!

Happy birthday, Gigi Hadid! The model has now officially left her teenage years behind, and celebrities have been taking to Twitter to wish her well.

Among them was her boyfriend, Aussie singer Cody Simpson, 18, who posted an adorable message, calling the Sports Illustrated star his “best mate”. “You are a woman of soul and substance… I love you,” he added.

The LA-native is the up-and-coming model-of-the-moment, and counts the likes of Justin Bieber, Karlie Kloss, Selena Gomez, Jourdan Dunn, and Kendall Jenner as BFFs. Indeed, Kendall and Gigi have appeared in tandem in several high-profile fashion campaigns, and last month Ms Jenner posted a striking shot of the pair taken from the April edition of Vogue.


me, G, and norm in April 2015 Vogue! @voguemagazine @mariotestino

A photo posted by Kendall Jenner (@kendalljenner) on

Earlier this week, Gigi was on the streets in Manhattan shooting for Maybelline with Brazilian beauty Adriana Lima.

Gigi was in New York on Tuesday on behalf of Maybelline

She has already celebrated her birthday – going for dinner with friends at the weekend wearing a striking Blue Life jumpsuit. The item, which boasts floral embroidery and a flared leg, was on sale on the brand’s website for €200 but has now completely sold out.

Cody and Gigi first began dating almost a year ago, but broke up due to scheduling clashes. They reunited in November and seemingly have been inseparable since. In lieu of birthday gifts from her beau, she asked for McDonalds vouchers to give out to homeless people that are in need of a meal. “I don't always carry cash and it’s nice to know it’ll be put to good use,” she explained.

Cody and Gigi have been dating on-off for a year

Gigi’s first campaign was for Baby Guess – at the tender age of just two. More recently, she's appeared in adverts for Tom Ford, Sisley, and Seafolly, and has walked for Chanel, Jean Paul Gaultier, and Marc Jacobs.