Jason Trawick did a good job picking out Britney Spears' engagement ring!

The 30-year-old pop star, who said "yes" to Trawick's Dec. 15 proposal, excitedly showed off her impressive sparkler in a picture on her Facebook page. "I can't stop looking at it," she wrote.

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According to a source, Trawick asked for Spears' hand with a Neil Lane engagement ring featuring a round stone that's over 3 carats and pave diamonds on the band.

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"It's very traditional," an insider says of the bling. "He picked out something he knew she would love."

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Although they've known each other professionally since 2006, Spears and Trawick began dating in 2009.

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