Britney may be back on the market, but at least one Spears girl is preparing to gleefully march down the aisle.

Jamie Lynn Spears — once upon a time America’s most famous teen mom — is engaged to wed 30-year-old Jamie Watson, her boyfriend for the past three years. Spears, 21, made the wedding announcement via Instagram on Saturday, posting a photo of the beaming couple — which included a glimpse of Jamie Lynn’s blingtastic engagement ring.

She wrote:

“Guesssss what?????? #Hedidgood.”

She was previously engaged to Casey Aldridge, the father of her 4-year-old daughter. The high school sweethearts called it quits in 2009.

The former actress starred in the Nickelodeon series Zoey 101 until she became pregnant at 16 and inspired a tabloid field day. Spears and her daughter Maddie Briann now split their time between Kentwood, Louisiana and Nashville, Tennessee, where Jamie Lynn hopes to find success as a country singer.

Things don’t seem quite so rosy on the love front for big sister Britney Spears, who split from her fiance Jason Trawick in January.

Written by Castina on March 4th, 2013 | Tagged as: Jamie-Lynn Spears