Adele just made a huge announcement at her concert over in Germany … confirming her engagement to Rich Paul.

The singer was doing her thing onstage in Munich when she told the crowd at her Friday concert she’s getting married to Rich … flashing her massive engagement ring in the process.

Check out the video from the concert … Adele is telling a story about how she told someone, “I can’t marry you because I’m already getting married” … and the crowd goes nuts as soon as Adele finishes the sentence — and shows off the 4-carat diamond ring on THAT finger.

The engagement ring looks like the one Adele’s been wearing for a while … a piece of jewelry that sparked rumors that Rich had finally popped the question.

Now, Adele’s confirming recent reports that Rich proposed last month in London … though it’s unclear when they’re planning to walk down the aisle.

Adele’s been calling herself Rich’s wife for a few months now … it’s more of an unofficial title, but seems they’re getting to work on making it official. She’s also mentioned wanting to start a family together.