Kelly Clarkson Thanks 'Sweet' Ariana Grande at Summertime Ball 2015

Kelly Clarkson keeps it sheer while attending the 2015 CapitalFM Summertime Ball held at Wembley Arena on Saturday afternoon (June 6) in London, England.

On the same day, the 33-year-old singer showed some appreciation for Ariana Grande, who took the time to meet with Kelly‘s loved ones backstage.

PHOTOS: Check out the latest pics of Kelly Clarkson

“Thank you so much @arianagrande for meeting my kiddos! You are very sweet and so is your crew! #sethlovesyou He will be talking about this for years ha!” Kelly captioned a pic on Instagram.

10+ pictures inside of Kelly Clarkson making an appearance at the CapitalFM Summertime Ball…