Jamie Lynn Spears announces engagement, Britney Spears celebrates

Britney's most recent romance may have crashed and burned - but things are looking up for another Spears sibling.

Brit's little sis Jamie Lynn is celebrating after her boyfriend Jamie Watson popped the question with a giant diamond ring.

The 21-year-old announced the news on Twitter over the weekend - posting a picture of her and Jamie showing off the gem.

Former child star Jamie Lynn has been dating 30-year-old Jamie for the past three years - after splitting with Casey Aldridge, the father of her four-year-old daughter Maddie.

Britney, 31, was recently dumped by her manager fiance Jason Trawick after nearly four years together.

But she isn't bitter about her sibling's happy news.

The pop superstar has already tweeted her congratulations, writing: "So excited and happy for my sister, congrats @jamielynnspears - love you."

Click here to see a photo of the ring from The Sun.

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