But there still can only be one winner in this hot momma going for a stroll with their handsome lad fashion face-off. So, let's size up the competition, shall we?
In one corner we have Kerr, sporting a quilted leather jacket with ankle booties and a killer split of a black skirt. In tow is Flynn Bloom in stylish kicks, cool corduroys and an adorable pageboy cap. This pair is tough to beat, admittedly.
Yet coming into the ring to lay the ultimate fashionista smack down is the one, the only, the inimitable, Posh Spice. She stuns in wine-colored suede boots, a golden bodice with cap sleeves and the terribly dashing Romeo Beckham on her arm.
Our money's with the Beckhams, since they coordinated with matching shades, but we could be wrong. Who gets your vote for most fashionable mommy and son duo?