change beyond (all) recognition

change beyond (all) recognition

To change so much or so dramatically as to now be unfamiliar or unrecognizable. I wouldn't have recognized that girl if she hadn't introduced herself—she's really changed beyond all recognition since we were kids!

change, alter, etc. beyond/out of (all) recogˈnition

change, etc. such a lot that people do not recognize you, it, etc: I went back to Birmingham after 20 years and it had changed beyond all recognition.She had changed beyond all recognition since I last saw her.
See also: beyond, of, out, recognition