It's official! Kate Hudson's rep confirmed X17online's EXCLUSIVE story about her split from Matt Bellamy and now the ring's off!

The tooled around town today in her Tesla, with 10 year-old son Ryder from her marriage to Black Crows singer Chris Robinson -- and it was apparent there was NO sparkle on her ring finger.

Hudson's rep to the media, "Kate and Matt hve been separated for some time now. Despite this, they remain very close friends and committed co-parents." The couple have 3 year-old son Bingham together.

It seems Kate's having no trouble rebounding ... the actress is reportedly hooking up with Dancing With the Stars dancer Derek Hough. The couple were spotted out together at Nice Guy restaurant last weekend and stayed there together, laughing, eating and drinking until 2am!

Hough has previously dated British singer Cheryl Cole, Hills star Lauren Conrad, Vampire Diaries' Nina Dobrev, and Nikki Reed of Twilight fame.

You think Kate and Derek are a good match?