Will Smith's daughter "corrected his heart".

Will Smith

Will Smith

The 'Focus' star celebrated Willow Smith's 15th birthday with a sweet Facebook post in tribute to his "Bean".

Captioning an old photo of the pair, he wrote: "Happy Birthday, my Bean. 15 years old today!! When you were born it took about 2 seconds to realize that I was willing to die for you.

"Thank you for correcting my heart - and teaching me how to love without constriction or condition. (sic)"

Meanwhile, Willow and her brother Jaden previously insisted they are "100 percent" misfits.

The 'Whip My Hair' hitmaker said: "I don't want to wear this because I'm a boy. Or [because] I'm a girl, so I have to act this type of way."

Whilst her brother, 17, added: "You decide your own path and you decide your own rules and that's what MSFTS [their clothing line] is all about.

"Nobody ever thinks, 'Yo who made all these rules? Who was here and made all these rules? Because, I'm equally as smart as them, and I don't necessarily agree with all the rules that they established before I came into the picture."