42 Celebs And Their Weight Loss Transformation 42. Britney Spears Britney Spears shed the pounds and got her body back for Vegas residency with the help of celeb trainer Tony Martinez Prev Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42