Britney's sister Jamie Lynn ties knot in park

Jamie Lynn Spears has married boyfriend James Watson.

The 22-year-old actress and Watson, who have been engaged for a year, tied the knot last night at a park in New Orleans, according to E! News.

Jamie's sister Britney and her boyfriend David Lucado flew from Los Angeles to Louisiana yesterday so they could witness the happy pair become husband and wife.

Meanwhile, the duo sparked speculation they were getting hitched yesterday after it emerged they had obtained a marriage licence from Tangipahoa Parish Clerk of Courts earlier this month.

The couple filed for the document on March 5 and had just 30 days from the date of issuance to wed before they would have had to apply for a new licence.

The blonde beauty announced her engagement on Twitter last May by posting a snap of a stunning diamond sparkler on her ring finger.

Jamie has been engaged before when her ex-boyfriend Casey Aldridge popped the question in 2008.

However, the former couple never made it to the aisle and their on/off relationship ended for good in 2010.

Jamie also has four-year-old daughter Maddie with Casey.