Mick Jagger and Melanie Hamrick Reveal Their Baby Son’s Unique Name — Find out What It Is!

Welcome to the world, Deveraux Octavian Basil Jagger!

Mick Jagger's much-younger girlfriend Melanie Hamrick revealed their newborn baby son's very unique name — and the little boy's first photo! — via Instagram on Friday, Dec. 16.

"I'm so love with my baby Deveraux Jagger ? Thank you [Elizabeth Jagger] for the sweet introduction ?? ❤️," Melanie, 30, captioned a snapshot of her baby boy. One of Mick's older daughters, Elizabeth, 32, was the first to reveal her new little brother's full name in a since-deleted Instagram post earlier on Friday.

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Mick, 73, and his ballerina love — who began dating in March 2014 — welcomed Deveraux on Thursday, Dec. 8. In addition to Elizabeth, the rocker is dad to seven older kids.

Click through the gallery below to see our definitive guide to all of Mick’s children!