Jamie Lynn Spears Gets Back to Work After Wedding, Performs in L.A. Wearing Her Diamond Ring!

See pics of the newly married singer

Jamie Lynn Spears is getting back to work!

Just over two weeks after getting married to husband James Watson in a beautiful New Orleans wedding, Britney Spears' younger sis performed aboard the Battleship Iowa for the Go Country 105 concert in L.A.

The 22-year-old bride showed off her huge diamond ring while rocking out on stage. Wearing tight black pants, a black top and black jacket with bright red heels, a pearl necklace and glasses, Jamie Lynn sang four songs, including her current single, "How Could I Want More."

At one point, she even broke into the chorus of Britney's hit "Oops! I Did It Again."

Jamie Lynn and her hubby said "I do" on Friday, Mar. 14 at the Audubon Tea Room in New Orleans. Big sister Britney, mom Lynn Spears, dad Jamie Spears and her 5-year-old daughter Maddie were all in attendance. Britney's boys Jayden James and Sean walked together as ring bearers during the nuptials.

There were about 150 to 200 people present for the nuptials and guests, along with the newlyweds, enjoyed a five-tiered wedding cake.