By Jane Nambi

Jamie Lynn is engaged to Jamie Watson.

Lynn is Britney Spears’ little sister. Lynn and Watson have been dating for three years.

Lynn, 21 announced her engagement yesterday, Sunday night on Instagram writing, “Guesssss what??????” She followed it up with a close-up shot of her engagement ring. “☺ #hedidgood” she wrote.

Watson, 30, is a businessman and not involved in the entertainment industry. In January, Watson said his relationship with the other Spears “is really going great” and that even though they had broken up before, they were back together. “We’ve been back together for a while now.”

Spears was previously engaged to high school boyfriend, Casey Aldridge, with whom she shares a 4-year-old daughter, Maddie; they split up in 2010. Spears had her own Nickelodeon show, “Zoey 101,” which lasted four seasons.