@Apasas
Man, I suddenly have a desire to have Monica Sweet show up in my subscription one day. You're definitely right: That's quite an ass! What she's wearing is perfect for her figure. Like I said, any panties can look good on a woman, just as long as it fits them right.
As for Morgane, she's always a special case, IMHO... those panties do look AMAZING on her, but they're also the kind of panties that I think would actually look bad on a lot of other models... Morgane has that special figure to wear "larger" panties and really make them look amazing.