Laura Prepon to guest star on 'Castle' as 'Nikki Heat' actress

Laura Prepon of That '70s Show is set to guest star on the ABC mystery series Castle as Natalie Gray, an actress who will play fictional heroine Nikki Heat in a film adaptation of protagonist Richard Castle's crime novels that will be depicted on the show.

Castle, played by Nathan Fillion, based his character Heat on Kate Beckett, a New York detective played by Stana Katic. The two have worked together to solve crimes since he initially asked to shadow her for research purposes.

Prepon, 30, is set to appear in a Castle episode in early 2011, an ABC spokesperson said. Her character, Gray, will travel to New York and shadow Castle and Beckett during a case, which revolves around the murder of a millionaire matchmaker.

Castle is currently on its third season.

Prepon shot to fame playing red-headed Donna on the sitcom That '70s show, which also launched the careers of Ashton Kutcher and Mila Kunis. The series ran from 1998 to 2006. Prepon has since guest starred on House, M.D., How I Met Your Mother and In Plain Sight.

Hilary Duff stays young with first novel

NEW YORK – Hilary Duff may be a recently married young woman of 23, but when it comes to books she's not quite ready to grow up.

"I love reading young adult books even though I'm a little older than the set demographic for YA," she said Tuesday. "I love adventure. I relate to girl characters, love, finding yourself and breaking out of the mold that people put you in."

It makes sense then that the actress and singer would decide to write her first novel "Elixir" for the younger set.

Duff may have a feel for her reading audience, too, from knowing her viewing audience. Duff played Lizzie MacGuire for two seasons on the Disney Channel from 2001-2004. Fans who watched her on TV may also want to check out her book.

"Elixir" is about a young photojournalist named Clea Raymond whose photos have extra images in them that weren't there originally. Then her father disappears. Clea sets off to unravel the mystery of both.

"This idea just kept coming to me and building in my head. I thought 'What am I gonna do with this? Am I gonna write a script or pitch the idea? Have someone else write it?' And then I thought 'I'm open for a new challenge. I'm going to try to write a book.'"

Duff has had a busy year. Besides writing, she also wed pro hockey player Mike Comrie in August.

She says publishing deadlines can be more stressful than planning a wedding.

"It's very similar ... They (publishers at Simon & Schuster Children's) were very good to me during the writing process and very lenient with dates and stuff until the very end. Then it got hectic. I was planning the wedding, and there's deadlines with that, too, like getting the location and getting your dress at a certain time ... I tend to do everything at the last minute ... I couldn't even choose which one is harder. I guess I'd say the book."

Duff plans "Elixir" to be the first in a series of novels. She will begin its sequel in a few weeks.

"That's one thing I learned during the writing process. So much changes. You have an idea in your head and then more ideas come with that idea and then your premise can kind of change."

By Hasan

DIANE LANE: ‘I’M WILLING TO BE WRONG!’

DIANE Lane says “willing to be wrong” makes her marriage work.

The actress — who married Josh Brolin six years ago — says a successful relationship needs a bit of give and take.

“It’s staying grateful, humble, willing to be wrong and thinking about the other person at least as much as you think about yourself,” she said.

“Put yourself in the other person’s moccasins, you know?”

Diane recently admitted she thinks Josh looks a bit like Jesus — because of his beard!

“He does look a bit like Jesus — a few people have said that,” she said.

“I think it’s funny but I really like the beard. I think it looks really cute.”

SELENA GOMEZ IS "REALLY NERVOUS" REGARDING DROP DOWN HER NEXT ALBUM!!!

SELENA Gomez says she’s “really nervous” about releasing her second album!

The teen singer admits she’s worried about what her legions fans will think ofA Year Without Rain — which hits shops September 28.

“I’ve worked on this record for a year and a couple of months now, so I’m really happy just to get it out,” she said.

“[But] I’m really nervous, I just want it to be out already.”

Gomez says it was difficult finding the time to record the album — because she’s also been shooting her moviesRamona & Beezus and Monte Carlo, as well as filming her show Wizards of Waverly Place.

“It’s been hard, it’s been really tricky,” she said. “The show has been great, they’ve always been so supportive of everything.”

Selena recently revealed she turns to pal Taylor Swift when she’s in need of support.

“Taylor [Swift] has helped me through some really hard times, we talk every single day,” she said.

“It’s kind of amazing that someone like her, who has sold millions of records, is still humble.”

Jennifer Lopez to Launch New Fragrance, Love and Glamour

Jennifer Lopez announced today that she will be launching a new fragrance in October. Called Love and Glamour, this latest scent is inspired by her own return to life on the A-list. Lopez pioneered the celebrity fragrance category back in 2002 and her other 16 fragrances have taken in a whopping $1 billion over the course of 16 launches. Not too bad for a girl from the block.

But how does Lopez feel about the other celebs who have jumped on the celebrity fragrance band wagon? “More power to them,” Lopez tells WWD. “I am very competitive, but I don’t look at it [as a competition.] I’ve always thought that authenticity, at the end of the day, wins, and the cream always rises to the top. I really don’t worry about other people, because I’m in competition with myself.”

Lopez, who is set to renew her vows with husband of six years, Marc Anthony this Saturday, also says that the creation of Love and Glamour was an “exacting process.” “I drive [Coty] a little bit crazy,” she said. “Because it’s always not signature enough. I go back and say things like, ‘Can we push the sandalwood a little bit more, can we make it a tiny bit more sexy?’ To translate that into actual chemistry is a difficult thing. Then they go back and say, ‘What does she mean by sexy?’ she explains to WWD.

But how did she come up with the concept? “What I always like to do is look at where I am in my life at the moment. [Here] it was right after the babies and was when I was getting back to work and getting back to what I do again. It just felt like a time of a lot of love and that seemed very romantic to me — I said it seems like love and glamour. As a name, Love and Glamour seemed like a really aspirational, fun and beautiful thing that we could work with in many, many ways.”

If your tastes in fragrance leans toward notes of Italian mandarin, guava and nectarine pulp, or if you’re a fan of, coconut orchid, you’re going to delight in Love and Glamour. But, will you buy yet another fragrance from Jennifer Lopez? Or have you had enough?

KATIE HOLMES TRANSFORMS INTO SOMEONE ELSE WHEN SHE’S AWAY FROM TOM CRUISE!!

KATIE Holmes is like a “different person” when she’s away from husband Tom Cruise – insiders say.

The actress is currently filming upcoming miniseries The Kennedys in Cobourg, Canada, while Cruise travels the world promoting his new movie Knight and Day.

“Katie’s like a different person when she’s not around Tom,” alleged one insider. “She always seems a lot happier when she’s on her own — like she’s got her wings back!”

Reports last year claimed Katie “refuses” to accept Tom’s “controlling” ways.

“Katie can’t handle Tom being so controlling and she just won’t accept it,” a source told Britain’s Now magazine. “Their relationship has moved on from the early days when she would bow to his every move.

“Now it’s Tom who has to play to his wife’s tune and he’s following her around like a lost puppy.”