When did your baby start using a sippy cup?

well, sipping and sucking is almost the same thing lol so it doesnt take long...but my son was off the bottle already at 8 months and he learned to use the cup very quickly...I gave it to him at 6 months the first time, took about a week to get real good at it...same with my daughter.....Just keep giving it to her and she will get the hang of it!!