The "Chasing Pavements" hitmaker, Adele gave up booze in 2008 but took up drinking again to help her write her second album, "21".
She quit alcohol for a second time after confessing she hated not remembering her drunken antics - but after 21 topped the charts in dozens of countries earlier this year, Adele decided to celebrate with a drink.
She tells Britain's The Sun, "When I work, I don't drink. But touring is different. On the road as news was coming through about us going to number one in different places the band would all say, 'Come on, Adele, have a celebration drink with us'."
"What was I meant to do, sit in my dressing room on my own with a mineral water?"