Ryan Philippe's ex, Alexis Knapp, is seven months pregnant. And now she's prepared. TMZ reports:

Ryan Phillippe's ex/alleged baby mama has lawyered up ... and a legal battle is now brewing ... TMZ has learned.

Alexis Knapp -- the model/actress who claims to be carrying Ryan's baby -- has hired Mark Vincent Kaplan.

Ryan has said he'll take a DNA test once the baby is born and support the child if it's his, but Alexis is not satisfied.

And here's a fun fact. Kaplan repped K-Fed in his divorce/custody battle with Britney Spears.

Since news of her pregnancy broke, reports have all said that Ryan Phillippe agreed to step up and support the kid once a paternity test was done, so I imagine this move is just to cement everything in front of a judge. I also imagine Mark Vincent Kaplan's going to have a slightly harder time in court against a preppy, normal white dude who already has an active role in the lives of two kids than he did against a crazed redneck who needs her dad to sign a permission slip for her to go to Starbucks.

Ryan Phillippe's current piece, Amanda Seyfried, doing nothing to help Japan:

With the possibility that he got the hot piece of ass in the banner pic pregnant, Ryan Phillippe wants to submit to a DNA test to make sure he doesn't have to write a check for the next 18 years. TMZ reports:

We're told Ryan will not submit to the DNA test until the baby is born. There are prenatal paternity tests, but there's a slight risk of miscarriage and Ryan does not want to take the chance. Our sources say Ryan will step up and provide support for Alexis Knapp's unborn baby, provided it is indeed his. Although there are reports Ryan and Alexis were boyfriend/girlfriend, we're told that was never the case. They had dated for a while but it was never serious. The baby is due in June.

His current girlfriend's eyes look like goggles, yet he wants scientific proof that he got this chick pregnant. To reiterate, look at the banner picture. Even if the baby wasn't mine, I'd take it to a tanning bed and pay the doctor to say it had smallpox. From a blanket. Because I'm Native American, you see. And if I said that then peop...oh, nevermind!