Goldie Hawn/Kate Hudson- Kate Hudson
Kate/Rooney Mara- Kate Mara
Lindsay/Ali Lohan- Lindsay Lohan
As odd as my listings are, I base this on the fact that one of the family members was wearing or endorsing 2000s female fashion. Or had a notable career in that decade.
Whoever wore 2000s fashion beats everyone else since they encouraged anyone consuming media to wear low rise pants at the time.