Gwen Stefani I'm sure has done it in the past, maybe still does.
The other members of No Doubt as well - they recorded their Rock Steady album in Jamaica after all. :silly:

On top of just recording in Jamaica they have song lyrics that elude to pot smoking like one of my favorites "Start The Fire" with lyrics like: "go on and get the lighter, let's get a little higher" - one of my favorite smoking songs hehe.

Then in Gwen's solo stuff she included some pot references for good measure. "I got it rolled and ready here to burn" in the song "Crash". Then there is, "We got hydroponic love and we're smokin'" from the song "Luxurious".