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Stars Play the Field!

Kim Kardashian! Jonas Brothers! Reese! See who's coming out swinging – and scoring a workout. By Serena Kappes

JULIANNE HOUGH

Joking to PEOPLE.com that her "strategy is don't let me near the ball" at the 19th Celebrity Softball Challenge in Nashville, the Dancing with the Stars pro turned country singer made up for her skills with spirit at the event, benefiting the Los Angeles cancer-care center City of Hope. Another bonus: Like dancing, softball is a total-body workout – great for the core and a surefire way to tone your arms from all that swinging.