Britney Spears and Jason Trawick may have called off their wedding, but there's another Spears sister getting hitched!
Brit's 21-year-old sister, Jamie Lynn Spears, is engaged to boyfriend Jamie Watson, 30.
"Guesssss what??????" she captioned a photo of her now-fiance and herself holding up her left hand to reveal her new sparkler.
She later added a close-up shot of her beautiful diamond ring with the caption, "He did good."
This will be the first marriage for the former "Zoey 101" actress.
Jamie Lynn has a 4-year-old daughter, Maddie, from her previous relationship with Casey Aldridge, whom she split from in 2010.
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