The Rolling Stones officially celebrated their 50th anniversary in 2012, but according to Keith Richards, the band members themselves count this month as their real anniversary.

That’s because drummer Charlie Watts officially joined the Stones in January of 1963.

So says Ultimate Classic Rock, and who are we to argue?

All of which provides us with the perfect opportunity to publish this pic of the band in LA in 1969 entertaining a groupie, one of thousands whom Mick and boys literally charmed the pants off.

No wonder they’ve been doing it for 50 years…