Britney Spears' little sister is a married woman - country singer Jamie Lynn married fiance Jamie Watson in Las Vegas on Friday (14Mar14).

The 22 year old exchanged vows with her 31-year-old beau at the Audobon Tea Room.

The bride's father walked her down the aisle and her daughter Maddie was the flower girl. Big sister Britney and her boyfriend David Lucado were among the guests, and her sons Sean Preston and Jayden James were ring bearers for their aunt and new uncle.

Thrilled Britney took to Twitter on Saturday to congratulate the newlyweds, writing, "So happy I could be a part of my little sister's big day... Yesterday was magical. Congrats @jamielynnspears!!"

This is Jamie Lynn's first wedding; she was previously engaged to Maddie's father, Casey Aldridge.