Britney Spears shocked a number of residents in her hometown over the weekend with her presence.

The 31-year-old superstar visited Louisiana to watch her sister Jamie Lynn Spears' daughter Maddie perform in Lemoine Academy of Dance's recital on Saturday.

According to Radar Online Britney felt right at home in the audience and was 'happily smiling' throughout the affair.

When a young student did a routine to her song Toxic Britney sang along, dancer Matthias Albrecht revealed to the website.

Britney even hung out backstage with dancers and presented one of the instructors with a flower bouquet onstage.

Following the recital, Britney went to exercise at the North Cypress Gym in Hammond, Louisiana.

Apparently fellow gym-goers were absolutely taken aback to see the superstar working out beside them.

'She was running on a treadmill all by herself, like any other person,' an eyewitness told Radar.

'She looked hotter in person! Everyone was excited to see her.'

She left on Sunday, with Jamie Lynn and her fiancé Jamie Watson sending her off at the New Orleans airport.

Britney is currently in a romantic relationship with 27-year-old legal researcher David Lucado. The pair have been together for several months since her split from former fiancé Jason Trawick back in January. Apparently Britney and David are doing well, as they spent Memorial Day weekend vacationing together in Rancho Palos Verdes.