I'm Confused: Twins for Jennifer Aniston?

The Nov. 17 issue of Star says Jennifer Aniston is having John Mayer's twins, but she is not pregnant yet?!?! Are fertility treatments that high-tech you can just choose to have twins? If so, she should just choose to deliver an entire third world country so she can catch up with Angelina?

Star reports, "that Jen has been undergoing fertility treatments, determined to have a pair of babies with John. Jen's biological clock began ticking so loudly that she had some of her eggs frozen just in case she didn't meet Mr. Right in time. But now that she's proposed to John and he's excited about being a dad, she's doing everything she can to conceive before her 40th birthday in February. She's even been having alternative medicine treatments to increase her chances of having twins."

Jen has changed her diet "eating cassava root, a wild yam, because women in Africa who consume it have the highest rate of conceived twins."

I also heard if you do it while standing on your head it increases your chances. Well good luck, if it works out for her it will just prove that the rich and famous can have anything they want.