POPSUGAR Fitness Bikini Bikini Booty Workout From Tone It Up Work That Backside With This Video From Tone It Up by PopSugar Community 4/02/11 167 Shares Like us on Facebook Get ready for bikini season with this beach bum workout from the Tone It Up girls, Karina and Katrena. This workout "lifts and tones the booty and backs of the legs." Get more great tips from the Tone It Up girls in the Tone It Up community group. Read More Video WorkoutTone It UpBikini SeasonCommunityWorkoutFitnessBikini Bikini From the Inside Out: How to Feel Confident in Any Summer Outfit Eva Longoria's Sexy Bikini Body Breaks All the Rules — Literally 9021-Whoa! Jennie Garth Shows Off Her Bikini Body on a Hawaiian Getaway Lucy Hale Gets Hot and Heavy During a Hawaiian Vacation POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Get fit with our daily newsletter Running Weight Loss Yoga Working Out Sign up with By signing up, I agree to the Terms and to receive emails from POPSUGAR. pixiedusk 2 years Short but sweet! elizlovescrisro 4 years I love it! elizlovescrisro 4 years I love it! 4 years Love the Tone It Up girls! Great workout! Karena and Katrina are spelled wrong in this article -- just wanted to let you know so that it can be updated.