Easy. Just call her Sarah and she'll be in a snit with you!
That's according to Mr Big from "Sex and the City," who says SarahJ is super-fussy about her name.
Chris Noth says the 44-year-old star can be a diva when her second name is dropped.
"I sometimes call her Sarah. But it is really Sarah Jessica. She gets annoyed with most people when they call her just Sarah. Luckily she gives me a dispensation on that. Otherwise it's SJ or Sarah Jessica."