Troubled singer Amy Winehouse left the hospital for a few hours over the weekend to perform at Nelson Mandela's 90th birthday concert.

She's seen here after delivering a right cross terrific performance ...

OR IS SHE?

No way this can be Amy, can it? She's looking downright healthy, normal and drug-free! Makes you wonder if it's a really a wax replica. Is it?

You decide in this edition of Real or Wax …

Follow this article's jump right now to learn the answer…

REAL!

Believe it or not, that's the real deal - and she's looking surprisingly awake and coherent! Then again, she's set the bar pretty low.

Interestingly, the reason we bring this up - an Amy Winehouse wax figure is in the works! It will replicate her myriad tattoos and beehive, and will be unveiled in London next month, the Madame Tussauds museum says.