One Direction Through the Years

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One Direction iHeartRadio Album Release Party
Christopher Polk/Getty Images for Clear Channel

It's been 10 years since One Direction made hearts collectively swoon, and in honor of their big anniversary, we're taking a look back at some of Niall Horan, Liam Payne, Harry Styles, Zayn Malik and Louis Tomlinson's biggest moments together and their later solo careers. Why? Because it's the little things, of course.