When Zayn Malik, Niall Horan, Liam Payne, Louis Tomlinson and, of course, Harry Styles united their pinup powers after failing to advance as solo singers on the UK TV competition — it changed the course of boy-band history.

A new direction began.

After the group came in third on “The X Factor,” 1D’s debut single, 2011’s “What Makes You Beautiful,” became an international smash — and the lads never looked back. But to the dismay of squealing fans everywhere, One Direction went on an indefinite hiatus in 2016, and since then, each member has pursued a solo career.

As we celebrate the fateful day it all started — along with the launch of a One Direction 10th-anniversary website — here’s a scorecard of which way their post-1D pursuits are going as rumors of a band reunion swirl. Plus, check out the band’s new “nostalgia” video above.

Harry Styles, 26

Solo albums: “Harry Styles” (2017), “Fine Line” (2019)
One-dude sound: Retro-pop that is as groovy as the bell-bottoms he often rocks.
Heartthrob highlights: In addition to scoring Top 10 hits with The Beatles-esque “Sign of the Times” and, more recently, the R&B-flavored “Watermelon Sugar” and “Adore You,” Styles served as both host and musical guest on “Saturday Night Live” last fall. And he even inducted Stevie Nicks into the Rock & Roll Hall of Fame last year, too.
Dating dish: “Fine Line” was musical therapy after Styles’ breakup with French model Camille Rowe.
Which direction he’s headed: Is there anything higher than up? Styles has emerged as the Justin Timberlake of One Direction.

Zayn Malik, 27

Solo albums: “Mind of Mine” (2016), “Icarus Falls” (2018)
One-dude sound: Imagine if the Weeknd had boy-band roots in the UK.
Heartthrob highlights: After becoming the first member of 1D to leave the group (in 2015) and get a solo deal, his “Mind of Mine” LP debuted at No. 1 on the Billboard 200 and won him an American Music Award for New Artist of the Year in 2016.
Dating dish: Malik has been in an on-again, off-again relationship with model Gigi Hadid since 2015, and the pulchritudinous pair are now expecting a baby.
Which direction he’s headed: Up. Not only was “Mind of Mine” probably the best album by a 1D alum not named Harry, but Malik is about to become a first-time baby-daddy.

Niall Horan, 26

Solo albums: “Flicker” (2017), “Heartbreak Weather” (2020)
One-dude sound: From breezy, folk-tinged tunes, such as his hit “Slow Hands,” to the swaggering, Arctic Monkeys-lite “Nice To Meet Ya.”
Heartthrob highlights: Since leaving the boys behind, Horan has collaborated with such cool chicks as Maren Morris (“Seeing Blind”), Julia Michaels (“What a Time”) and Ashe (“Moral of the Story”).
Dating dish: He’s rumored to be seeing shoe buyer Amelia Woolley.
Which direction he’s headed: After a strong solo start, he’s trending down and could use another “Slow Hands.”

Louis Tomlinson, 28

Solo albums: “Walls” (2020)
One-dude sound: Earnest, folk-flecked pop that brings to mind a junior Ed Sheeran on songs such as “Too Young.”
Heartthrob highlights: Before becoming the last 1D member to release a solo album in January, he teamed up with DJ-producer Steve Aoki for his first solo single, the EDM-infused “Just Hold On,” which hit No. 2 on the U.K. charts in 2016.
Dating dish: Tomlinson has a longtime love in Eleanor Calder, but while the two were split up, he had a son, Freddie, 4, with stylist Briana Jungwirth.
Which direction he’s headed: He lacks the solo mojo of Styles, Malik and Horan, but a song such as “Don’t Let It Break Your Heart” pours on that old One Direction charm.

Liam Payne, 26

Solo albums: “LP1” (2019)
One-dude sound: What-makes-you-boring pop that attempts everything from R&B and hip-hop to EDM and reggaeton.
Heartthrob highlights: An assist from Quavo on “Strip That Down” helped Payne’s debut solo single hit the Top 10 in 2017, and he has also gotten guest-star support from the likes of Zedd (“Get Low”) and Rita Ora (“For You,” from the “Fifty Shades Freed” soundtrack).
Dating dish: After having a son, Bear, 3, with former “X Factor” judge Cheryl, he’s now dating model Maya Henry.
Which direction he’s headed: Holding on for the inevitable 1D reunion.

One Direction on stage in 2012.

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One Direction through the years …

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One Direction’s “Up All Night” album cover.

One Direction: Louis Tomlinson, Liam Payne, Harry Styles, Zayn Malik and Niall Horan in 2011.

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