George Clooney is the best son-in-law ever.
On Thursday, the 54-year-old actor celebrated the London launch of his Casamigos Tequila with fellow co-founders Rande Gerber and Mike Meldman, as well as the release of Cindy Crawford's memoir, Becoming, at the Beaumont Hotel. (Rande is Cindy's husband.)
A source close to the family tells ET that George and Baria get along really well and he was spotted giving her a sweet kiss on the cheek during the event. "They seem to have a great relationship and she looks like she was having a great time with the whole crew," the source adds.
At one point in the evening, George actually played bartender and made drinks for A-list guests including photographer Mario Testino, Jeremy Piven and Downton Abbey actor Allen Leech.
The party comes a little over one year after George and Amal's wedding. Relive their star-studded marriage in the video below.