Before publically celebrating her fiancé’s birthday in Las Vegas on Friday night and showing off her new Neil Lane diamond ring, Britney Spears made sure to make her engagement official by updating her Facebook relationship status.

OK! GALLERY: NEWLY ENGAGE BRITNEY SPEARS & JASON TRAWICK CELEBRATE IN LAS VEGAS

The pop star changed her status to “Engaged,” yesterday after Jason Trawick popped the question earlier this week, removing her previous “In a Relationship” update.

After spending the night at Chateau Nightclub & Gardens celebrating on Friday, Britney couldn’t help but post about her excitement.

OK! NEWS: BRITNEY SPEARS TWEETS ENGAGEMENT NEWS? "SO SO SO EXCITED!"

“Tonight was one of the most magical nights of my life. Such an amazing time with my new fiancé and our closest friends and family. #Blessed,” the “Don’t Hold It Against Me” wrote.

The mom of two, who turned 30 on Dec. 2, and her former agent Jason have been dating since 2010.

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