Today, Pink unveiled the duet 'True Love' taken from her new album 'The Truth about Love'.
The mid tempo track details the trials and tribulations of relationships, with Lily and Pink's different vocal styles surprisingly complimenting each other.
Both Lily and Pink previously took time out from the music industry to focus on motherhood.
We can just imagine Pink and Lily in the studio now, gossiping over a cup of tea while their kids play together.
So far the song has garnered high praise, with many fans taking to Twitter to congratulate both Pink and Lily.
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This morning, Lily took to Twitter to thank her fans for their positive feedback.
She tweeted: "wake up to HUNDREDS of nice messages about the Pink tune, thanks guys, y'all are the best. Glad you all like it."
Lily left the music industry two years ago to focus on her family, husband Sam Cooper and baby Ethel.
She also branched out into the fashion industry, opening a vintage fashion shop with her sister called 'Lucy in Disguise'.
However, it seems that the allure of music was too much to resist for Lily.