Why is Baskin-Robbins trotting out Tori Spelling to push its new line of soft-serve ice cream on other pregnant women when soft-serve is a known taboo for preggo women?

Several sources in the know -- including one pregnant OB/GYN -- tell TMZ that there are "definite" health risks associated with soft-serve ice cream for expectant moms because of Listeria bacteria. Softie machines can be studded with bacteria that can cause all kinds of issues for newborns -- in fact, Down Under, it's pretty much forbidden for preggo women.