SB 8.12.19

āvartanodvartana-kampita-stana-
 prakṛṣṭa-hāroru-bharaiḥ pade pade
prabhajyamānām iva madhyataś calat-
 pada-pravālaṁ nayatīṁ tatas tataḥ
Word for word: 
āvartana — by the falling down; udvartana — and springing up; kampita — trembling; stana — of the two breasts; prakṛṣṭa — beautiful; hāra — and of garlands; uru-bharaiḥ — because of the heavy load; pade pade — at every step; prabhajyamānām iva — as if breaking; madhyataḥ — in the middle portion of the body; calat — moving like that; pada-pravālam — feet reddish like coral; nayatīm — moving; tataḥ tataḥ — here and there.
Translation: 
Because the ball was falling down and bouncing up, as She played with it Her breasts trembled, and because of the weight of those breasts and Her heavy flower garlands, Her waist appeared to be all but breaking at every step, as Her two soft feet, which were reddish like coral, moved here and there.