Britney Spears is excited to see her little sis walk down the aisle!
"So excited and happy for my sister," the former X Factor judge wrote. "congrats @jamielynnspears - love you."
This will be the first marriage for Jamie Lynn, 21. She was previously engaged to Casey Aldridge, the father of her 4-year-old daughter, Maddie, but the couple split in 2010.
Whether it's David or another lucky guy, we're sure Britney won't have any trouble finding a date to Jamie Lynn and Jamie's wedding!