One is an actress turned entrepreneur known for her penchant for eye-wateringly expensive organic beauty products, experimental spa treatments and tofu.
The other is a woman who once said "everything about mediocrity kills me" and who sells high heels on her website, which claim to help you "climb the corporate ladder" (oh, that's how she got to be America's First Daughter).
Both have lifestyle websites that encourage women to "empower" themselves using their motivational messages, be inspired by their handy travel tips, or just buy really expensive workout gear.
And both have been ridiculed over the years for failing to acknowledge their own privilege when writing about the strains of modern life, reports the Telegraph.
So take our quiz to find out who said it: Gwyneth or Ivanka?