Too cool for school. Looks from Stella McCartney for GapKids. Photo courtesy of Stella McCartney and Gap.

For those of you who consider yourself fashionista moms, or moms of budding fashionistas, mark you calendars for Nov. 2.

That is the day GapKids and BabyGap by Stella McCartney hits select stores in the US, Canada and online; and Nov.3 for stores in the UK, France, Ireland and Japan.

However, New Yorkers can get a special sneak preview of the collection on Friday, Oct. 30, starting at 9 am, when Stella Gap will be available in the "White Space" adjacent to the the chain's flagship store at 680 Fifth Avenue (between 53rd and 54th streets) in Manhattan.

Through this partnership with Gap, McCartney -- known for her animal-friendly, namesake designs and partnerships with Adidas and H&M -- is venturing into the realm of babies and children's clothing for the first time.

The lines, for newborns and kids through size 12, reflect McCartney's sense of what she thinks children should wear (she has three kids of her own), as well as her own design aesthetic.

"For years now I've wanted to create a collection for kids," McCartney said in a release. "I think it has a mix of the playful and practical. There are pieces that are classic and sort of timeless and hopefully very chic, mixed with more playful and a little bit cooler pieces. It's really exciting for us to do a boys and girls collection with Gap for the first time.

"I believe that this one-off collaboration will be a great way for customers to be able to participate in the Stella McCartney brand."

And having her own children gave her an instant focus group, leading to cool things like monster and superhero T-shirts, white "sketching" sneakers that kids can customize with the accompanying markers, pajamas in a dinosaur-print bag, organic jeans and tutu skirts in multiple colors.

In fact, there are several items in the children's collection, specifically a leopard decorated sweater dress, skinny grey jeans and a grey cardigan dress that were included in McCartney's Fall '09 RTW collection.

However, these pieces -- ranging from $14 to $128 -- are much more affordable than her women's offerings, . "I believe that kids clothing should be more accessibly priced, which is particularly important at the moment given the current climate," she said.

And given the continuing climate (and an incredible deal), we predict there will be a whole lot of adults trying to squeeze into the bigger kids sizes!

For more amazing designer collaborations read about this couturier's upcoming collection for Target.