A source tells PEOPLE why Megan Fox and Machine Gun Kelly's baby daughter's name "really felt right" to them after sharing her full name on Tuesday, June 17. The former couple welcomed their little one in March.

Machine Gun Kelly has revealed the name of the daughter he recently welcomed with Megan Fox. In March, Kelly, 35, whose real name is Colson Baker, announced on Instagram that Fox had given birth to a baby girl, their first child together. The musician simply referred to the newborn as “our little celestial seed” in his post.

Three months after welcoming their daughter, exes Megan Fox and Machine Gun Kelly have finally shared her unique name. In a Tuesday afternoon Instagram post, Kelly (whose legal name is Colson Baker) shared a video of himself serenading his daughter alongside the caption,