'Dancing With the Stars' Chelsie Hightower -- I'm Off the Show and NOT BY CHOICE

She's been a regular on the show since 2009, but "Dancing With the Stars" pro Chelsie Hightower is no longer welcome in the ballroom -- at least for now -- telling TMZ she has been AXED from the show's upcoming season.

Chelsie -- who's been partnered with celebs like Michael Bolton, Romeo, and Jake Pavelka -- was at LAX last night when our photog asked her about "DWTS'" upcoming season ... assuming she was part of it.

But Chelsie dropped a bombshell (accidentally) and told our photog something she wasn't supposed to ... specifically that she's not coming back this year and it was not her choice.