Adele 'Wows' In Katy Perry Instagram Selfie PHOTO: Major Weight Loss Goes Viral, 'Skyfall' Songstress Looks Amazing!

Back in March, Adele's Instagram went viral after the Grammy Award-winning songstress posted a photo promoting "World Water Day" - and she looked absolutely stunning:

Ever since giving birth to baby son Angelo back in October 2012, Adele has largely shed herself away from the Hollywood limelight. But earlier this week, the 26-year-old English crooner attended a Katy Perry concert in London. She took a quick snapshot with the "Dark Horse" beauty - and she's looking even more fabulous!

katyperry: "...And on the 2nd LDN show the Queen graced me with her presence."

Can fans even tell that's Adele? Apparently she's lost some major weight and freshened-up her look a bit!

The "Skyfall" songstress later tweeted after the show, praising Perry's performance:

@OfficialAdele: "Katy Perry was supreme tonight! But UK mamas look who I saw tonight!"

Now that she's started an adorble family with boyfriend Simon Konecki, is Adele living a healthier and happier lifestyle? Wonder how she'll express such changes in any new upcoming music!