Lorde, Ariana Grande, Hayley Williams, Solange Contribute to Rookie's 2015 Yearbook

Rookie's fourth-annual yearbook (celebrating the teen-directed site's "senior year") was officially announced yesterday, and per usual, an impressive roster of contributors have added their unique flair via "articles, interviews, collages, photo editorials, and illustrations" to the 352-page book. 

Little Mix, Lorde, Ellie Goulding & Sia: Real-Time Rewind for Oct. 2

Lorde, Florence Welch, Paramore's Hayley Williams, Solange, Ariana Grande, and Charli XCX are just a few of the featured contributors, who range from Vampire Weekend's Ezra Koenig to Willow Smith.

The Rookie Yearbook Four is available for preorder here.