Posted Oct. 23, 2008

With her predilection for expensive hobo-wear, it's clear that Mary-Kate Olsen marches to the beat -- usually while wearing perilously high heels -- of her own drummer. So it's hardly a surprise that the pocketsize starlet, 22, has no interest in conventional domestic milestones.

In "Influence," the new coffee-table book in which she and twin sis Ashley interview designers, artists, photographers and other famous creative types, creep-tastic fashion icon Karl Lagerfeld asks them whether they plan to get married and have kids.

"I don't feel the need to get married," states MK. "But Ashley wants children. I'll be a great aunt or godmother."

Clarifies Ashley, "To my child."

Mary-Kate and Ashley are spotted at Heathrow Airport in London on Oct. 8. (©Retna Ltd.)

Mary-Kate's supportive approach also extends to the men in their lives, as she explains how she accepts or rejects her sister's suitors without question.

"I just support her," Mary-Kate tells Oprah on the "Young Millionaire Moguls" episode airing Thursday. "If she doesn't like him, I won't like him. If she likes him, I'll like him."

Not that she'll necessarily keep her piehole closed.

MK says she "can put in my two cents, but I think, you know, whatever makes her happy. It's her life."

Ashley has been dating Justin Bartha since the summer, and she seemed quite happy during a recent night out at a Los Angeles restaurant as she fed the actor pieces of her "organic roast chicken" and held his hand, according to People.

Mary-Kate, meanwhile, has been linked to artist Nate Lowman since late last year, although she informs the Big O that she's "not in a relationship."

Oprah also touches on the fashion label-running siblings' decision to get their own digs, which Ashley says was "absolutely" the right move.

"We're sisters. We're twins. We work together, and I think to live separately is just -- it gives you your space," opines Mary-Kate. "I mean, she lives a few blocks away, but it's just -- it's nice ... to go home [and be alone]."

Adds Ashley, "We're with each other even after work. We should probably just be living together!"