"Early Show" co-anchor Rebecca Jarvis noted, "With Reese Witherspoon, of course, she's gone through a number of changes. … She's had two babies, been through divorce.

Blackwell urged the women on his list to emulate the "effortless beauty and memorable style" of Reese Witherspoon, Nicole Kidman, Kate Moss, Scarlett Johansson, Natalie Portman and Dionne Warwick.

A happily unmarried couple (Vince Vaughn and Reese Witherspoon) spend Dec. 25 with each of their four postnuclear families.