Jamie Lynn Spears Marries Jamie Watson
03/14/2014 AT 11:30 PM EDT
Celebrating at a reception at the Audubon Tea Room, the newlyweds – he in a dark suit with a silky tie, she in a v-neck Liancarlo gown – cut into a five-tiered cake dotted with sugared roses. Jamie Lynn's 5½-year-old daughter Maddie stood next to the couple in her own white dress.
Guests – including NASCAR's Ricky Carmichael and Fox Racing President and CEO Pete Fox – were gifted beer cozies emblazoned with "Jamie Lynn & Jamie March 14, 2014" as favors. A colorful assortment of roses decorated the tables, which were also glowing with candles from glass votives.
The 22-year-old bride's gown was purchased at I Do Bridal Couture in Baton Rogue, the store confirmed on Instagram in January.
"Finally found my perfect dress," she shared on Instagram in January along with a photo of herself holding both Maddie and a bag from the store as she stood next to mom Lynne.
The wedding comes a year after Jamie Lynn excitedly shared her engagement news on Instagram. The duo had been dating on and off for three years, Watson, 31, told the New York Post last year.
"Guesssss what??????" Jamie Lynn captioned the photo, which showed the ecstatic-looking country singer embracing her new fiancé as she proudly showed off the sparkler on her left hand.
Britney wasted no time in publicly congratulating her little sister and BFF.
"So excited and happy for my sister, congrats @jamielynnspears – love you," Britney tweeted less than 48 hours after Jamie Lynn shared her news.
The younger Spears sister made her mark as a teenager when she starred on Nickelodeon's Zoey 101, but left the show after it was revealed she was pregnant at 16. She moved in and became engaged to Maddie's father, Casey Aldridge, although the duo split in 2010 – the same year she began dating Watson.
E! Online was first to post the wedding news.
Reporting by MARY MARGARET, PATRICK GOMEZ and MELODY CHIU