The Personal Side of Prejudice, Bias and Oppression

Unfortunately I have had many occurrences with bias prejudices and oppression. One lady that I work with made a very racial comment as she always does. It was just in the store after closing it down, and she says, "I'm sorry I don't mean to be ugly,but I hate how these black women have those big braids and then wrap them in a big 'ol bun and put on top of their heads like that and then put that big 'ol bow in their heads on top of having all that hair pinned on top of their head already. I'm sorry, but black women all follow the same trends."  I just told her, " well, I actually think that it is pretty cute, but I don't like all of my hair pulled off my forehead." I mean clearly I have worked with many diverse people, not meaning diverse based on dominant culture, but diverse among each other. I have worked with black,white Muslim, Christian, Buddhist, Indian, Asian and atheist people, to name a few. At the moment it was said I brushed it off. She always makes comments and I normally brush it off, and now I'm getting fed up with hearing those comments about blacks and especially black women.  Black women usually are the target and I happen to be well educated and carry myself in a manner where I'm respectful of everyone's difference and sometimes I exemplify internal oppression especially when it is something ridiculous. However, She is an older white lady in her fifties and was raised in a Time where schools were segregated for a period of time while she was growing up, which may reflect some of views that she may have but I do not think that makes it alright.... I'm not sure how I should respond the next time it happens, as I am already annoyed at the fact. Any suggestions?