Katharine McPhee is both beautiful and talented, having become a big name during the fifth season of American Idol, when she lost out to...

by Hilton Hater at

Once a cheater, always a cheater?

If that's the case, you might wanna stay away from the following celebrities... no matter how attractive they are, no matter how well they dunk a basketball or how impressive they are in front of a camera.

Indeed, infidelity is not reserved for athletes or singers; male or females. 

Stars from all industries have strayed from their significant others - and while some have rebounded with hot new mates (darn you, Mila Kunis and Lindsey Vonn!), all hopefully regret the actions that landed them there.

Below, we present a rundown of 17 Celebrities Who Are Known Cheaters. Take note, future boyfriends, girlfriends and spouses:

17 Celebrities Who Are Known Cheaters
Really, everyone else on this list is just playing for second place.
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Tiger Woods

1. Tiger Woods

Really, everyone else on this list is just playing for second place.


Dean McDermott

2. Dean McDermott

Tori Spelling is the mother of his kids, but Dean McDermott has admitted to having another woman call him "daddy."


Ryan Phillippe

3. Ryan Phillippe

Ryan Phillippe cheated on Reese Witherspoon with Abbie Cornish. Who breaks the heart of America's Sweetheart?!?


Ashton Kutcher

4. Ashton Kutcher

We do not approve of Ashton Kutcher cheating on Demi Moore with a random blonde. But it did eventually land him Mila Kunis, so...


Jesse James

5. Jesse James

Jesse James cheated on Sandra Bullock. But she eventually found his replacement: a little guy named Oscar.


Kristen Stewart

6. Kristen Stewart

Much to the continued shock of Robsten fans everywhere, Kristen Stewart blew it with Robert Pattinson in order to swap spit with Rupert Sanders.


LeAnn Rimes

7. LeAnn Rimes

LeAnn Rimes and Eddie Cibrian are now a happy couple. But they arrived their via an ugly mess.


Eddie Cibrian

8. Eddie Cibrian

Eddie Cibrian cheated on Brandi Glanville with LeAnn Rimes. Brandi will be glad to tell you all about it.


Kobe Bryant

9. Kobe Bryant

Kobe Bryant didn't merely cheat on his wife; he was accused of rape the women he slept with in Colorado.


Katharine McPhee

10. Katharine McPhee

Katharine McPhee was caught kissing Smash director Michael Morris while she was married. Dishonest AND stupid.


Jude Law

11. Jude Law

Jude Law cheated on Sienna Miller with their nanny. That's almost impressive!


Mario Lopez

12. Mario Lopez

Mario Lopez didn't just cheat on Ali Landry. He slept with someone else days before their wedding.


Lamar Odom

13. Lamar Odom

Lamar Odom didn't just go on a drug binge. He went on a binge with his penis during an ugly run in 2013, while still married to Khloe Kardashian.


Rita Ora

14. Rita Ora

We can't confirm this one. But Rob Kardashian says she slept with "like 20 dudes" while dating him.


Nick Carter

15. Nick Carter

Nick Carter has admitted it: he cheated on Paris Hilton with Ashlee Simpson... a long time ago.


Brad Pitt

16. Brad Pitt

It's old news, but we know it's true: Brad Pitt did cheat on Jennifer Aniston with Angelina Jolie.


David Boreanaz

17. David Boreanaz

David Boreanaz slept with Rachel Uchitel while married. Yes, he has something in common with Tiger Woods.


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by Free Britney at

Katharine McPhee and Nick Cokas are reportedly reconciling after she kicked up a major scandal last fall by hooking up with her also-married Smash director.

The singer-actress, 29, was photographed making out with Michael Morris in NYC last fall, despite the fact that both were married to other people.

In the aftermath, it was revealed that American Idol runner-up McPhee and husband Nick Cokas, 47, had been separated and "living apart" for months.

Nevertheless, she was "deeply embarrassed" by the scandal.

Flash forward to March 10: Katharine McPhee and Cokas were photographed smiling, chatting and walking their three dogs together in Los Angeles.

The reunion is more than just exes being amicable, a source close to McPhee says. "Katharine and Nick are working on their marriage," the insider says.

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by Free Britney at

Former Smash director Michael Morris was allegedly kicked out of the house by his wife, Mary McCormack, for hooking up with Katharine McPhee.

The actress, 45, threw Morris out of their Los Angeles home late Sunday over the photos that emerged of Katharine McPhee and Michael Morris kissing.

Morris, who was kissing McPhee, 29, in plain sight (sorry), informed his wife of 10 years that incriminating photos were taken and would be online.

Page Six also claims that Morris, who has three young daughters with McCormack, knew this because he attempted to buy the photos himself.

Katharine is also married, though reports say she and Nick Cokas, who married in February 2008, have been amicably separated for six months.

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by Free Britney at

Katharine McPhee and her husband Nick Cokas have quietly parted ways, and this happened long before her public smooch with Michael Morris.

"They've been separated for six months," a friend says of the couple, who got married over five years ago. "Nick continues to co-manage her music."

The news comes on the heels of reports that Katharine McPhee and Michael Morris, her former Smash director and who is also married, are together.

Morris' wife is actress Mary McCormack (In Plain Sight, Private Parts). They have three daughters, 2, 6 and 9. Katharine, 29, has no children with Nick.

Katharine and Nick Cokas first met in 2005 when they performed in a L.A. production of The Ghost and Mrs. Muir and soon began a romantic relationship.

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by Free Britney at

Singer-actress Katharine McPhee and Michael Morris, a director on her former show Smash, are together, despite both being married to other people.

  • Kat McPhee Pic
  • Matthew Morris Pic

Michael Morris is married to actress Mary McCormack (The West Wing, In Plain Sight) and the duo has three young daughters together, ages 2, 6 and 9.

Katharine McPhee is married to producer Nick Cokas, 47, and has no kids. She had Nick, who wed in 2008, are separated and have been living apart.

It's unclear where Michael's relationship with Mary stands, but since he was kissing Katharine in broad daylight in L.A. the other day, it can't be great.

None of the parties involved have commented on the relationship.

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by Hilton Hater at

She has gone on to enjoy a successful acting career, but Katharine McPhee was back on the stage that made her famous last night.

The GORGEOUS former finalist was featured on the American Idol results show alongside OneRepublic, belting out a terrific version of the track "If I Lose Myself."

Watch the fun duet now:

As for the actual results... did you agree with the finalist sent home? Vote in our Idol poll now and sound off on the country's decision!

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by Hilton Hater at

Katharine McPhee turns 29 years old today.

And the former American Idol finalist could really use your birthday wishes, considering NBC has shoved Smash to Saturdays and all but canceled it following a poorly rated Season 2.

Gorgeous Katharine McPhee

But McPhee has received mostly positive reviews for her portrayal of Karen Cartwright, proving her acting chops and looking downright gorgeous in the process.

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by Free Britney at

You won't see her on the list of winners from the Golden Globes, but Katharine McPhee certainly accomplished a rare red carpet feat before Sunday's ceremony:

Leaving Ryan Seacrest at a loss for words.

The Smash star absolutely wowed in a plunging Olivier Theyskens for Theory gown. McPhee, 28, said she was going for a sexier look than in the past.

Struggling to retain composure, Seacrest told her she “definitely accomplished sexy.”

To really appreciate this work of fashion, check out more Katharine McPhee pictures below and see her in this dress from several different angles (worth it):

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by Free Britney at

THG is counting down the 100 Hottest Bikini Bodies of 2012!

If you haven't figured it out by now, we've been paying tribute to the hottest of the hot with bikini photos galore, and the competition is flat out sweltering.

Keeping the heat rising in the #10 spot: Katharine McPhee!

  • A Katharine McPhee Bikini Pic
  • Katharine McPhee Bikini Pic

Most recently, Megan Fox bikini photos made THG's hot list.

Now, it's a singer-actress who transfixes us with her beauty.

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by Hilton Hater at

After weeks of hype, Smash premiered on NBC last night.

And the Broadway musical-based drama received raves from critics for its performances, music and originality. But, let's face it, many men tuned in just to stare at Katharine McPhee.

Katharine McPhee in GQ

The former American Idol finalist is featured in the latest issue of GQ, sizzling in a pictorial and understanding exactly how to sell her series.

"What if I tell your readers that in episode five I take off all my clothes?" McPhee jokes with the magazine. "I mean... no. But can't we just say that?"

Very funny, Kat. But let's get serious for a moment: How about half your clothes? A quarter of them?

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