Britney Spears is beaming over her younger sister's engagement.
"So excited and happy for my sister, congrats @jamielynnspears - love you," the pop star Tweeted.
PLAY IT NOW: Access Archives: Jamie Lynn Spears (2002)
As previously reported on AccessHollywood.com, Jamie Lynn Spears, 21, announced her engagement to boyfriend Jamie Watson, 30, via Instagram on Saturday.
"Guesssss what??????" she captioned a photo of her now-fiance and herself holding up her left hand to reveal her new sparkler.
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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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-- Jesse Spero
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