The "I'd Rather Go Naked Than Wear Fur" ads from PETA have been historically disappointing. The word "naked" is right there, but where's the nudity?

But now, we're giving credit where credit is due. PETA's really stepped up their game in the latter half of this year, with "I'd Rather . . ." ads featuring Christian Serratos and Keeley Hazell naked. For real naked.

And they've done it again, making it a bare flesh hat trick with Real Housewives of New York City star Bethenny Frankel and her awe-inspiring tight butt.

As you can see from the behind-the-scenes shot at left, the sultry Ms. Frankel actually was totally nude during the shoot, and not only that, she was in the early stages of her pregnancy at the time!

Bethenny's primarly known for the Real Housewives, and few people realize that before she hit it big playing herself, she enjoyed a brief acting career.

In the 1994 movie Hollywood Hills 90028, she even pulled out her boobs for the camera . . . twice.

No wonder she looks so comfortable naked!