The pop sensation's family also needed to recover after watching her give an exhausting performance in New Orleans last night.
Her mother Lynne, sister Jamie Lynn and her niece Maddie joined the star's two sons as they all enjoyed splashing around at the pool and putting their feet up.
And it was clear to anyone watching the family enjoying a dip that Britney is not the only member of the clan with a star physique.
In the water zone: Three generations of Britney Spears family enjoyed relaxing in the pool today
Mother-of-one Jamie Lynn looked stunning in a skimpy bikini that showed off her enviable curves.
However it was Britney's mother who was most impressive with her gravity defying body.
The 56-year-old looked toned in a one-piece swimsuit that made her look more glam-ma than grandma.
Femme fatale: Jamie Lynn shows Britney is not the only member of the family with a great bikini body
But it was not all lazing around for the elder members of the family during their excursion to the pool.
Mama swim: Jamie Lynn looks the spitting image of her sister as she gives daughter Maddie some swimming lessons in the sweltering summer sun
Jamie Lynn made sure her three-year-old daughter Maddie gained confidence in the water by giving her a swimming lesson.
And she also shepherded Britney's children in and made sure they got some exercise.
Their swimming trip followed an exhausting night cheering on their superstar family member.
Britney's parents Jamie and Lynne, brother Bryan, and sister Jamie Lynn all cheered on their girl, but it was her niece, Maddie who seemed to be having the most fun.
Piece of me: Lynne Spears looks to have given daughter Jamie Lynn some of her good genes as they both displayed impressive physiques
Crack of dawn: Jamie Lynn and the rest of the Spears clan enjoyed an early morning swimming session
The adorable three-year-old wore darling earmuffs to protect her ears from any noise damage as she sang along.
Maddie has been enjoying the tour with Britney’s boys Sean Preston, five, and four-year-old Jayden James.
Britney's action-adventure themed Femme Fatale show has so far been an overwhelming hit with audiences.
Even notoriously catty celebrity blogger Perez Hilton gave it the thumbs up.
He said: 'I really enjoyed this show, and I'm being honest. As a stand alone piece, the Femme Fatale tour is thoroughly enjoyable.
'Britney sings live and I feel like this time the show and her are on the same level, Britney seems to have gotten her spark back.'
Britney will perform 33 dates across the U.S. before taking the tour to Europe in September.
Half-time oranges: Lynne Spears takes her granddaughter for some refreshing orange slices after her swimming lesson
In you get: Jamie Lynn shepherds Britneys son into the pool for some morning exercise