Happy Birthday: See Pics of Liam Payne's Major Hair Transformations

Liam Payne's 21st birthday seems like an international holiday that all his fans has been looking forward to for weeks now. It's such an exciting day for the One Direction singer, so in honor of his milestone birthday, we took a look back on 21 of his biggest hair moments ever. Even as a tiny tot, Liam had amazing hair, and has experimented with tons of stylish hair looks ever since!

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