By Rob Alarcon in New York City

Real-life superstar sisters Hilary and Haylie Duff are anything but bickering siblings. Despite having on screen and musical success, the two still find time to get together as family and also within each other's careers. The two have already sung together on an album and are currently starring in the comedy "Material Girls," now out in theaters. The Duffs star as the Marchetta sisters, two wealthy sisters who must rebuild their family fortune after a scandal and investigation strips them of their wealth.

Below, the sisters talk about their film in an interview.

Q: Why has it been so long from the completion of this movie over a year ago to the release date?

HILARY: I think they were editing it for a long time. We had a lot to do with putting the movie together and financing and everything. The movie was actually done by Maverick. We were just trying to shop it to the right studio to find who we thought was a good match to put the movie out. We ended up at MGM. It takes a while to do those things.

Q: How similar are your characters to yourselves?

HAYLIE: Similar in some ways. We’re similar because in the movie the girls are each others’ best friends. They have all the same friends. But then we’re very different.

HILARY: They look out for each other too. But in the movie, the girls are very materialistic. You can’t say that we don’t like to shop every once in a while, but we’re not like these girls. These girls don’t have a care in the world, they don’t have any responsibilities, and everything’s just been handed to them and they don’t appreciate it. When they lose its like someone hit them over the head with a bat. They have no idea how to handle real life situations.

Q: The characters are L.A. socialites. Are they similar to anyone you have come across?

HAYLIE: Of course. There are definitely things we drew from in our every day life. A lot of the club scenes and the engagement party. Once somebody isn’t at the top of their game and they’ve kind of fallen from grace, everyone’s kind of like, “Oh God, I don’t want anything to do with them. We watch our best friends in the world not answer their phones and pretend they’re not there.

HILARY: Like who?

HAYLIE: In the movie, when we go to the engagement party.

HILARY: Who’s done that in real life?

HAYLIE: I’m not saying someone’s done that to us. You see it a lot though.

Q: What was it about this film that made you feel like you had to do it?

HAYLIE: I think it was the girls. We read it and just fell in love with their voices. They say mean things and they do mean things, but they don’t necessarily mean it. We like the message that the movie has, which, to me, is learning who you are and what’s important in life and sticking up for yourself and having your family and having each other.

Q: This is definitely a family movie. Was there ever a thought to make it for an older audience?

HAYLIE: That’s one thing we didn’t really think that we had to do with this. This isn’t some edgy movie that’s going to shock people when it comes out. I think a good lesson for us to learn is that a movie like Napoleon Dynamite, that doesn’t have anything bad in it, can be a huge hit.

HILARY: We did do this a year ago. It was at a time where we didn’t want to stray so far from a young audience. I don’t think that this movie talks down to kids, but it’s appropriate for them and maybe cool enough that older people can enjoy it as well. We didn’t feel like we had to push the envelope. Now we can move on and do things that are different or we feel like can challenge ourselves.

Q: Do you have any stories from the set?

HILARY: In the movie, they steal our car. We give them our keys because we think they’re the valet. On set that day, we were filming downtown in L.A. and one of the crew guys gave this guy his keys and he gave him a ticket and it was a fake ticket. The scene that we filmed that day happened in real life.

Q: What are the advantages and disadvantages of working together?

HAYLIE: There’s no disadvantage. We have the best time. It’s like having your best friend at work with you every day.

Q: What’s next for your careers?

HAYLIE: Right now I’m doing Hairspray. She’s focusing on her music. She has a new album coming out and a single that she releases the video for in a couple of days. I started Seventh Heaven last week.

HILARY: I have a fragrance coming out in September. That comes out with Elizabeth Arden.

"Material Girls" is now playing in theaters everywhere.