The reality star announced via a spokesperson that she's left the E4 series that made her famous in order to focus on other projects.
"After four amazing years on Made in Chelsea, Lucy feels that now is the right time to explore some other exciting opportunities and projects that she is passionate about," said her rep.
"Being part of such a successful show has been an incredible experience for her, and she wishes everyone involved all the very best for the future."
Lucy later tweeted: "Thanks for all the kind messages people."
The star has recently been on holiday with her co-star boyfriend James Dunmore. They turned down the chance to appear in the recent Made In Chelsea: South of France series in order to focus on their relationship.
Co-star Frankie Gaff told BangShowbiz: "Lucy's not going to be in the next series. At the moment she's decided not to because she's loved up."
Lucy joined in series four of Made In Chelsea back in 2012. Her sister Tiffany Watson, who arrived in 2014's series 8, will remain on the show.
Oh, Lucy, we'll miss you!
Take a trip down memory lane by checking out Lucy Watson's sassiest quotes here!