While Britney Spears tours the country with Nicki Minaj … mama Lynne Spears is taking care of the kids. And Lynne was recently spotted showing off her figure in a one-piece bathing suit while taking her grand-babies out for a swim in their hotel pool in Dallas, Texas.

Lynne Spears may be 56 years old … but judging by this photo, it looks like her body is better than her 29-year-old daughter!

Lookin’ good mama Spears … Loo-kin good!

[TMZ]