David Lucado and Britney Spears
Everyone has a different definition of "Sunday Best."
and boyfriend David Lucado
were photographed attending religious services on Sunday in Thousand Oaks, Calif., in some interesting outfits.
Wearing thigh-high boots and a tight gray-and-black dress, Spears, 31, sported messy hair as she held hands with Lucado, who wore a vest, tie and jeans.
In March, Spears was photographed attending Easter services
in Amite, La., with her mother and son.
Most recently, Spears and Lucado attended
the premiere of The Smurfs 2
in Westwood, Calif., with the singer's sons – who star alongside their mother
in the music video for "Ooh La La."