FANS of CHRISTINA AGUILERAíS gargantuan post-pregnancy boobs need not fear shrinkage ñ sheís planning on having plenty more kids to keep them pumped up.

The Dirrty beautyís breasts have maintained their eye-popping shape and size since the January birth of her son, MAX, with husband JORDAN BRATMAN.

And nature wonít be granted much time to reduce them if the singer ñ who credits motherhood with making her feel ìvery sexyî ñ goes through with plans to add to her brood.

When asked if she wants more babies, Christina replied: ìYes, absolutely. Absolutely!

ìMotherhood comes very naturally to me. I think a whole new confidence comes with being a mother. I feel very confident and very sexy as a mother.î

So other than having a bald baby knawing on her fake funbag, what makes Christina feel sexy? Cleaning toilets, evacuating her dog's anal glands, and this guy:

Xtina gets steamy at MrSkin.com.

ìThey donít just splash around ó they laugh, scream, swear and make sexy noises. Weíre happy that theyíre happy, but we wish theyíd keep it down a bit. There are a lot of old people who live around here, and they donít like noise after the dinner hour.î

Although it's no Angelina Jolie and Brad Pitt Scream with Sensual Ecstasy in the Wilds of Africa, it's a nice display of connubial passion, to be sure. Though it's a bummer that their game of Marco Hole-o is causing the elderly to have trouble digesting their liver and onions during Empty Nest reruns. It's like Cocoon, in reverse.

Christina is NAKED at MrSkin.com.

Xtina is back in Los Angeles after her doctor ordered her on bed rest after contracting the flu. She cancelled the rest of her tour and came home. Xtina has yet to confirm she's popping one out.

A source claims Nicole wanted a girl, but she's "happy" she's having a boy. This source said, ìSheís having fun planning for the baby ó shopping, picking out names and designing a nursery."

Well, yeah, that part of having a baby is fun. Wait until the creature actually births and she finds out that you can't just drop it at doggy day care for a nail trim and fur condition. And that babies don't really like being toted around in Vuitton purses. And that babies eat food, which will have to be kept in the home. Oooh, that's right! We weren't about to let this one go without a Nicole-Richie-is-skinny-joke! In your face, world!

Pre-preggo Nicole is at MrSkin.com.

So's Xtina . . . and she's NAKED!

Casually dressed and sporting dark sunglasses, Xtina and hubby Jordan Bratman had their driver drop them off at NY's Maternal Fetal Medicine Association — a practice known for their expertise in high-risk pregnancies and state-of-the-art ultrasounds. Guess we know what this girl wants!

After leaving the doctor's office, the happy couple stopped for a bite at Capitale on the Lower East Side. You'd be hungry too if you were (possibly) eating for two!

Also, Christina was seen touching her stomach, as sure a sign of pregnancy as swooning, the vapors, and a pocketwatch dangled over the belly, rotating counterclockwise. Unless we get notarized reports of proof of pregnancy, we're calling b.s. on this story. Why? DUH. Christina is an Oompa Loompa and her husband is a proboscis monkey. You can't crossbreed those species; it's biologically impossible.

Xtina is naked and not knocked up at MrSkin.com.