Tiger Woods’ sperm must wear capes and have a big “S” in the middle of their chests because Joslyn James, one of Tiger’s mistresses and also a porn star, says she was twice impregnated by Woods.

Using protection “was never talked about,” the 34DD actress told “Inside Edition” in an interview that airs tonight. “It was never protected.”

James, 32, who carried on a torrid affair with Woods from 2006 to 2009, said she miscarried in her first pregnancy at about the same time Tiger’s wife, Elin Nordegren, gave birth to daughter Sam Alexis on June 18, 2007.

James said she aborted her next pregnancy close to the Feb. 8, 2009, birth of Woods’ son, Charlie Axel.

Woods was never told about either pregnancy, the skin-flick stunner said.

“I just didn’t want to ruin anything,” James said.

God bless Joslyn James. A lot of women would have used a pregnancy to get something out of Tiger. A million dollars and monthly payments perhaps. But not James. She took care of it twice and kept it to herself. Half of the leading actors in Hollywood right now must be telling their mistresses that they have a lot to learn from this Ms. James.