Adele: I Support Kesha ... the Crowd-Pleasing Moment in London

Adele's got Kesha's back ... and she just used a huge public platform to let the world know it.

Adele was accepting an award for Best Female Solo Artist at The Brit Awards -- which are going down Wednesday night in London. She went through the usual thank yous ... shouting out her management and record label for embracing the fact she's a woman.

And then Adele brought up Kesha's legal battle with Dr. Luke. It was a remarkable endorsement from the most popular artist in the world -- especially coming one day after the videotaped deposition ... where Kesha said Luke did NOT rape or drug her.