Seeing Double:
Mary-Kate & Ashley Olsen

"They were very sweet, real girlie girls," recalls comedian Bob Saget of the eight years he shared Full House with the Olsen sisters, who began splitting the role of daughter Michelle at age 9 months. But the 11 year-old stars of videos, TV specials, and albums, who next plan to appear in a televised remake of The Bad Seed, can turn into just that in the closet of their San Fernando Valley, Calif., home. Reports their mortgage-banker dad, Dave: "When they both want to wear one outfit"--as they did for a recent Spice Girls concert-- "all heck breaks loose."

Ashley: A lot of people say we have pretty eyes. Sometimes they're really blue, and sometimes they're green.

Mary-Kate: Yours are very green now, Ashley

Ashley: When we go to a premiere, someone will do our makeup and hair. We'll use blush and eye shadow for fun. I like to look at Vogue. Mary-Kate, sometimes she just doesn't care. She'll put on jeans and a T-shirt.

Mary-Kate: When we're working, we have to look exactly alike. One time Ashley got her hair cut really short.

Ashley: Too short! I liked it at first, but then I went, whoa!

Mary-Kate: The kids at school never tease us about looking alike. The only thing they tease us about is that we are short. I'm 54 inches. She's 53.

Ashley: Yeah, we're really short. Our brother Trent says it takes two of us to make one person.

"When I would get them mixed up, I would get the hands on the hips and the "Don't you know me by now?" look", says former costar Bob Saget of Ashley and Mary-Kate. "When their personalities came out more, I started being able to tell them apart. Subtle things, like one was more yuppie and one more Melrose."