I thought of something the other day with regards to the usage of mami and mamita as discussed in this thread.
What has not been mentioned yet is mami chula. In my opinion that could get some negative reactions depending on the situation or context. It's definitely under the category of a piropo or something said to an attractive woman to catch her attention. However, it still sparks controversy about the connotation, who uses it, education, social class etc. the reaction is going to vary.
-MP.