Clarkson captioned the photo, "Always have a bath before bed."
While the Twilight star and the British songstress have remained tightlipped about their rumored engagement, it sure looked like Twigs is doing her best to display the flashy new hardware on her left hand in the steamy snapshot.
This particular indulgent bath took place Wattens, Austria on Tuesday night where Twigs attended the Swarovski Crystal World reopening gala, according to Yahoo News.
In early April it was revealed that Pattison had popped the question to his girlfriend FKA Twigs. Ever since the news broke, fans have been clamoring to see the ring, and this semi-NSFW Instagram pic is the closest she's come to really showing it off.