When Billie Lourd was a little girl, she wanted one thing: to be a big sister. And in a new interview, the 25-year-old revealed her late mother, Carrie Fisher, almost adopted to make that happen.

"I was bummed that I didn't have any — even just to be a witness. Sometimes when crazy things were happening, I wanted to ask, 'Is this just me?' My mom tried to adopt a kid. You know when you ask for a puppy? I asked for a sister," Billie told Town & Country Magazine. "One year I was like, 'Hey, Mom, I want a sister.' We tried to adopt — like, we did a whole thing, and, no, the home study was not strong."

Carrie dated Billie's dad Bryan Lourd in the early 1990s and Billie was the only child they had together. But just one year ago, Billie finally got what she always wanted: another sibling! "But now I have a little sister. My dad got married a year ago and I have a nine-year-old little sister who's absolutely awesome. She's kind of like my daughter, too," she confessed.

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However, today Billie is focusing on finding herself following the passing of her mom and grandmother, Debbie Reynolds, one day apart. "I’ve always kind of lived in their shadows, and now is the first time in my life when I get to own my life and stand on my own," she admitted. "I love being my mother’s daughter, and it’s something I always will be, but now I get to be just Billie. It’s a lot of pressure, because she had such an incredible legacy, and now I have to uphold that and make it evolve in my own way."

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Billie and Carrie in 2011.

In a previous exclusive interview with Closer Weekly, one of Carrie's friends revealed she used to call Billie her "best work," which may explain why she only ever had one child. "Carrie wasn't the perfect mom, but in the last couple of years, [her] relationship [with Billie] became very solid," the friend said. "She told friends, 'I grew up and so did Billie. She's the best work I've ever produced.'"