The Keeping Up With The Kardashians star showed off her brand new looks while attending the opening of a Sugar Factory in New York on Wednesday (16 September).
Kylie, 18, is known to be a fan of the confectionary brand and has attended plenty of parties and openings for them in the past.
Yesterday, she ensured maximum publicity for the company by rocking up to the red carpet with her newly-dyed, bright green locks. (She's previously had pink hair and aquamarine hair, so this isn't too unusual!)
Her style was straight out of big sister Kim Kardashian West's rulebook, teaming a high-waisted, nude-coloured pencil skirt with a matching crop top.
Kylie's appearance at Sugar Factory came after it was revealed her new app has outsold those of sisters Kim, Khloe and Kendall.
Each sister launched their very own app earlier this week (apart from Kourtney, whose app launches at a later date), and it seems Kylie's winning the downloads race, as hers topped the chart 24 hours after release.
All you need to know about Kylie Jenner: