Britney Spears Gushes Over Boyfriend As He Turns 23

They have been dating only a few short months.But Britney Spears was not shy about showering her boyfriend, Sam Asghari, with love on his 23rd birthday.

'My baby's birthday,' the 35-year-old pop princess wrote on social media alongside a collage of snapshots including a personalized cake with the model's 'real name' Hesam.

Britney has been twice married before; to her childhood friend Jason Allen Alexander for a swift 55 hours, and Kevin Federline from 2004 to 2007.She has two children with Federline: Jayden James, aged 10, and Sean Preston, 11.

Meanwhile the blonde bombshell is focused on fitness as she's set to return to her Las Vegas residency at Planet Hollywood's AXIS on March 22.