Katy Perry congratulates ex-husband Russell Brand on his 10 years of sobriety

Katy Perry took the time to congratulate her ex-husband Russell Brand on his 10 years of sobriety via email.

On December 13, Brand tweeted, "10 years clean today. Thanks for all your messages of love. Thanks @schullerinc for the film. Anyone can get clean, one day at a time."

"Although theyve 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," a source told The Sun.

Perry has recently gone public with her relationship with musician John Mayer. They have been dating since the summer, reports The Huffington Post.

Perry also spoke about her split from Brand in her 3-D film Katy Perry: Part of Me, according to London's Daily Mail, saying, "It's not about the problem; it's about how you solve it. If I can be an example showing people that they don't have to lay down and die because they've been thrown a curveball, then that's great."

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