Celebrities may be beautiful and talented, but that doesn’t always translate into success — at least not when it comes to real estate.

Over the years, some of the biggest names in showbiz have made Razzie-worthy moves on the real estate market, resulting in millions upon millions of dollars lost in bad investments. (We’re looking at you, Nicolas Cage!)

Of course, for every bad investment, there’s a good one, too. Just look at Ellen DeGeneres, who recently sold her Beverly Hills estate for a cool $37.5 million. (Yep.)

So, what other celebrities have hit and missed on the market?

Come for a tour in the gallery, above.

In today’s struggling real estate market, even celebrities are having to bend over backwards to pin that “Sold” sign onto their front lawn.

Still, that hasn’t stopped some of the top A-listers in the business from trying to turn a profit, with asking prices in the $18.9 million range. (Hello, Brian Grazer!)

Will they actually make money back on their investments? And were their purchases a good idea to begin with?

To answer these questions,  Celebuzz has enlisted the help of Million Dollar Listing: New York star Ryan Serhant, who gives his expert opinion on all-things real estate in the gallery, above.

Click through now to see what he has to say about listings by Grazer, Russell Simmons and Joe and Tina Simpson, as well as a recent $18.5 million purchase by Kevin James.

Ryan Serhant is one of New York’s most successful real estate brokers and the star of the Bravo reality series Million Dollar Listing New York. He is also the real estate expert for The Insider, and appears regularly on the Today show’s Guys Tell All segment.

For all real estate-related questions, feel free to tweet Serhart @ryanserhant. He will answer one reader question per-blog.

Ryan Serhant is one of New York’s most successful real estate brokers and the star of the Bravo reality series Million Dollar Listing New York. He is also the real estate expert for The Insider, and appears regularly on the Today show’s Guys Tell All segment.

For all real estate-related questions, feel free to tweet Serhart @ryanserhant. He will answer one reader question per-blog.

Even in a sluggish economy, apartment listings here in New York City are reaching epic proportions. In fact, some are now going for prices in the $100 million range.

No, I’m not joking. In the last few months alone, I have seen multiple listings in that range. Many of these sales were fueled by the recent purchase of a $90 million penthouse, located inside a building that is — wait for it — still under construction.

So, just who is buying these $100 million homes?

On first thought, one might assume that A-list celebrities like Beyonce and Jay-Z or Gwyneth Paltrow are shelling out big bucks to live in these luxurious pads.

In reality, it’s the hedge funders and foreign buyers from countries like China, Russia and Brazil who are gobbling them up.

Ekaterina Rybolovleva, the 22-year-old daughter of Russian billionaire Dmitriy Rybolovlev, recently dropped a whopping $88 million to live at 15 Central Park West, a building known for its high-priced apartments and stunning views of the Park.

Not only does that price tag give her 6,744 square feet of space to work with, she now has the chance to hob-nob with celebrity neighbors like Sting, Denzel Washington and Alex Rodriguez.

But while $88 million may sound like a lot of money to spend on an apartment, the payoff is often worth it for perspective buyers, as New York has become a safe place to invest in real estate. Even if the buyer chooses not to live inside the property, they can still rent it out for a hefty price, sometimes at $50,000 per-month.

If you’re one of the lucky few who is in the market to buy an apartment in the $100 million range — because, let’s face it, who isn’t? — you can always snatch up a penthouse inside the Ritz-Carlton for a mere $95 million. Or, you could try a three-level, 8,000 square-foot apartment for a higher price, at $100 million.

Fun fact: The owner of said apartment purchased it for $4.5 million back in 1993. In other words: That’s a $95 million profit over 20 years.

As it turns out, my friends, investing in America is a good idea after all.