updated 03/04/2013 AT 9:05 AM ET
•originally published 03/04/2013 AT 10:30 AM ET
Just call them the social media savvy Spears family.
“So excited and happy for my sister, congrats @jamielynnspears - love you,” she Tweeted.
“Guesssss what??????” Jamie Lynn Tweeted, sharing a photo of the couple, with her left hand raised to show off the ring. “#Hedidgood.”