Adele - Adele And Williams Have Matching Tattoos

Williams, who is one half of the Grammy Award-winning country duo, grew close to the British soul singer while on the road with her last spring (11).

She tells U.K.'s Vogue magazine, "Adele was really supportive of us right from the beginning. It was so good to be able to stand stage-side and watch her perform every night; then becoming friends with her was really the icing on the cake. She's brilliant company."

And the 29 year old reveals the pair became such good friends that she and Adele headed to the tattoo parlour to get inked with a symbolic graphic as a reminder of their time together.

Williams tells People, "It's three dots on the inside of our left wrists, so it's (like) 'to be continued'."