Cindy Crawford has paid tribute to her daughter Kaia Gerber on her 16th birthday.

The 51-year-old supermodel celebrated her daughter's milestone birthday with a sweet message on social media.

Cindy wrote: ''Happy 16th birthday @KaiaGerber! Love this pic of us by @PatrickDemarchelier. Your first time in @VogueMagazine, but I'm pretty sure not your last! Hope all your wishes come true - love you always! (sic)''

Whilst Kaia's father Rande Gerber added on his Instagram account: ''Then and now and always. Happy bday to my sweet 16 yr old girl. (sic)''

Meanwhile, Kaia previously admits she finds it ''difficult'' juggling her modelling career with her education.

She said: ''It's really difficult, because you have a lot of different things going on. I go to school everyday, and that does come first.

''I try to separate my modelling work from my school life because I don't want people to think of me differently or that I am a certain way because of it. I think I do a pretty good job of separating it, I don't really talk about it with my friends. Other than my friends that are part of the industry, and I guess that's different.

''I use my free time for work, but because I love it so much, it doesn't feel like work and I still have fun with it. I don't really have days where I can sit and do nothing.''

However, Kaia doesn't like to complain about her busy schedule.

She said: ''I think it was always something that I knew that I wanted to do. But I would never of thought that I'd be doing Daisy Marc Jacobs ten years later. My favourite thing about being a model is the people that I meet. I don't think there's any other job where you get to learn so many things about so many different people. I just love forging new relationships.''