Popsugar Fitness Britney Spears Britney Spears Workout Routine We Think Britney's New Life Motto Is "It's Fitness, B*tch" March 23, 2017 by Dominique Michelle Astorino View On One Page Photo 9 of 9 ADVERTISEMENT () Start Slideshow My baby's birthday 💜 @samasghari A post shared by Britney Spears (@britneyspears) on Mar 3, 2017 at 5:36pm PST Share This Link Copy ← Use Arrow Keys → 9 And She Knows Hiking Outdoors Is a Great Way to Celebrate a Birthday It's one of our favorite birthday activities, too. Previous Next Start Slideshow Britney SpearsWorkouts