They’re not even one month old, but Jennifer Lopez and Marc Anthony’s tiny twins are gracing the cover of People magazine. The twins, born February 22, pose with their mom on the cover and with both parents for an inside spread, in a shoot that supposedly cost the magazine $6 million.

But the little Lopez-Anthonys are going to have double the competition when it comes to shooting magazines, as it seems more and more Hollywood couples are having twins. We did a quick tally of all the celebs who have had twice the fun in the baby department, and here’s what we came up with:

Dennis Quaid – Thomas Boone and Zoe Grace, November 2007 Mia Hamm – Ava and Grace, March 2007 Marcia Cross – Eden and Savannah, February 2007 Patrick Dempsey  – Darby Galen and Sullivan Patrick, February 2007 P. Diddy – D’Lila Starr and Jessie James, December 2006 Diana Krall – Harlan James and Dexter Henry Lorcan, December 2006 Melissa Etheridge – Miller Steven and Johnnie Rose, October 2006 Julia Roberts – Phinnaeus Walter and Hazel Patricia, November 2004

Who's Next?

Okay, after that we just got bored of counting. But then we got excited about twins again, since it looks like Angelina Jolie and Brad Pitt are packing a double. You know that celeb couple couldn’t be overshadowed. Dammit, if J.Lo’s having twins, they will too! Jessica Alba and Cash Warren have also been rumored to have not one but two buns in the oven – and that’s a lot of Hollywood bread in the making!

We personally can’t wait to see which other celeb couples can crank out the kids at twice the speed. Our money’s on Drew Barrymore and Justin Long - they’re too cute and too happy for just one baby down the road!