Britney Spears' son changes last name

Britney Spears' son changes last name Britney Spears' son has changed his last name from Federline to Spears. 4 April 2026 Britney Spears' son has changed his last name. Britney Spears' son changes last name Sean Preston, 20 - who Britney shares with her former husband Kevin Federline - previously used his father's last name but he recently updated his Instagram handle to Sean P Spears, dropping Federline. There is no suggestion he has legally changed his name.