Jamie Lynn Spears Announces Engagement on Twitter

The singer-actress shares an Instagram photo of herself and fiance Jamie Watson with her new ring.
Jamie Watson and Jamie Lynn Spears
Jamie Watson and Jamie Lynn Spears
Jamie Lynn Spears

Jamie Lynn Spears announced her engagement Saturday night on Twitter.

"Guesssss what??????" the 21-year-old singer-actress tweeted along with an Instagram photo of her with her new fiance, Jamie Watson.

She followed that up with another Instagram photo, an up-close shot of the ring, with the message: ":) #hedidgood"

Spears has been dating Watson, 30, for three years. This will be her first marriage, though she was previously engaged to Casey Aldridge, the father of her 4-year-old daughter, Maddie. They broke up in 2010.

Spears is known for her role in Nickelodeon's Zoey 101, which ran from 2005-08. More recently, she was working on launching a country music career.

Her engagement comes only two months after her older sister, Britney Spears, broke off her engagement to agent Jason Trawick.