BRITNEY SPEARS may not be getting married anymore, but her sister is.  JAMIE LYNN SPEARS is engaged to a guy named Jamie Watson.  He's 30 and they've been together three years.  Jamie Lynn is 21.

(--Here's a picture of them together, and a close-up of her engagement ring.)

--Jamie Lynn was previously engaged to Casey Aldridge, the father of her daughter Maddie.  They broke up in 2010.