Katy Perry has contacted ex-husband Russell Brand to tell him how proud she is of him for celebrating 10 drug-free years, according to reports.
Funnyman Russell reached the landmark this month, writing on his Twitter page: "Ten years clean...Thanks for all your messages of love... Anyone can get clean, one day at a time."
Now pop star Katy, whose divorce with Russell was finalised in July, has emailed him while he's on tour in New Zealand, The Sun reported.
A source said: "Although they've broken up, Katy knows how important this milestone is for Russell.
"She wanted to let him know that she was thinking of him and that she was still proud of what he has achieved.
"She also wanted to drop him the email to wish him a happy 2013 and to let him know that her heart was finally healing."
Russell has had a string of conquests since splitting with Katy, and has been recently linked to Australian model and TV presenter Kate Peck.
Meanwhile Teenage Dream songstress Katy has moved on with singer John Mayer.