Yolanda Hadid, for 'bringing my first best friend into the world,' and also her sister Gigi for giving birth to her 'newest best friend.' 'I'm the luckiest girl to be your baby sister.

However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. Aeon/Getty Gigi Hadid is a spring baby, but you wouldn't be able to tell by her 30th birthday ...

the happiest birthday my baby girl. You are a breath of fresh air and goodness and kindness," Mohamed wrote on Instagram. "We love you so much." Gigi kept her message back to her dad short and ...

Model Gigi Hadid has made ... if and when she is caught on camera," Hadid continued. "I know it's an extra effort — but as a new mum, I just want the best for my baby, as all parents do." ...

Gigi and Bella Hadid are arguably the most famous sisters ... I'm the luckiest girl to be your baby sister. I couldn't choose a better YOU if I tried!!!" While Bella now rocks brunette hair ...