Ashly says she’s concerned about her younger sister, Molly’s obsession with her appearance.

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“My sister thinks she looks like a monster, but she’s absolutely beautiful,” says Ashly. “People refer to us as twins all the time, so if she believes that she’s a monster, then so am I.”

Ashly reveals that she, too, has body issues, but says hers are focused on her weight. “The scale does make me anxious,” she says. “I don’t like to be more than about 115 pounds. After eating pizza or pasta, I feel like I can see it immediately all over my body.”

WATCH: 'I'm Obsessed With The Way I Look,' Says Young Woman

Ashly says she deals with her issues by going to the gym two hours a day, seven days a week.

“I’m a perfectionist. It’s never enough,” she says. “I won’t go out on dates because of the shape that I’m in.”

Ashly and her sister, Molly, both say they are unsure why they have these body issues. Hear more of their story on Tuesday’s episode of Dr. Phil, and hear from their mom, Judy, who once suffered from anorexia. Are the women’s body issues coincidence, genetic, or a learned way of thinking? And on Tuesday, Sophie Turner, Sansa Stark on the hit HBO series Game of Thrones, shares how she has worked to overcome her own body image issues. Check here to see where you can watch.

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Could There Be A Connection Between Mom’s Anorexia And Daughters’ Obsession With Their Appearance?