Katherine Heigl

Two tall blondes stand before you below.

One begrudgingly stars on Grey's Anatomy, where her character occasionally talks with and makes love to her dead ghost fiance in a weird story possibly written as payback after all her public bashing of the show that made her famous.

The other married Howard Stern for some reason.

But put the colors of their similar dresses together and what you get is a pretty patriotic pair! Beth Ostrosky was red hot in Black Halo in NYC, and Katherine Heigl kept it cool at a boutique opening in Los Angeles ...

Who wore this dress better?

Grey's Anatomy spoiler alert! After months of rumors that stars Katherine Heigl and T.R. Knight may be leaving the show, their co-star James Pickens, Jr., a.k.a. The Chief, has added fuel to the fire by sort of confirming they are:

"Yes, she is," he said when asked by Us Weekly if Heigl will exit the show that made them famous. "Wherever Katherine goes, I wish her nothing but the best."

As for Knight, Pickens said, "He's going too."

The network and studio say they cannot confirm anything, and Katherine Heigl's and T.R. Knight's personal reps have declined to comment on the subject.

However, an ABC source says, "There's no way [James Pickens] could know that, because nothing has been decided yet. Nothing has been written and [Heigl and Knight] are still working out what will happen next season with the network."

T.R. Knight and Katherine Heigl want out of Grey's Anatomy.

According to inside sources who work closely with Grey's Anatomy, it is likely that Heigl and T.R. Knight will make an exit at the end of the current fifth season.

Both have asked to leave. However, ABC needs to sign off on letting them out of their contracts, which extend six years, and that hasn't been done.

So why did Pickens say they are leaving?

"I don't think James meant to say what he did," one insider said. "I think he was thrown by the line of questioning and didn't realize what he was saying."

No one actually expects you to repeat as World's Most Desirable Woman (a title won by Eva Mendes in '09, as we reported yesterday). But falling 80 spots?

That's the fate of Grey's Anatomy star Katherine Heigl, who came in at a modest #81 after taking home the title in 2008. What a difference a year makes.

Why the precipitous decline? A few theories:

• Lack of celebrity gossip.
• Her chain smoking habit.
• She's been off the market (marrying at Christmas 2007).
• Her desirability mirrors that of her much-maligned TV show.
• She rarely, if ever, shuts her damn yap and offers about as many quotes dissing Knocked Up as she did Knocked Up quotes.

We may never know the reason, but it certainly isn't because Katherine Heigl got any less hot. Case in point: click to enlarge some classic pics of her below ...

Katherine Heigl of Grey's Anatomy, Knocked Up and 27 Dresses fame turns 30 years old today. Congratulations, Katherine, on entering your fourth decade!

Say what you will about the wife of Josh Kelley - we heart her! Here's a little photo tribute to the hot, outspoken and controversial actress. Click to enlarge!

Check out our celebrity birthdays calendar to see who's up next!

It's a fashion face-off of tall beauties. Katherine Heigl chose Black Halo’s belted sheath in cobalt blue for an L.A. event, while the Black Eyed Peas frontwoman showed up looking white-hot at the BET Awards party in L.A.

Who wore this dress better, Katherine Heigl in blue or Fergie in white?

Who wore it best?

Sorry guys for misleading you. Not exactly "smokin'" in the same way this Katherine Heigl nude photo is. Oh no. In this case we mean ... LITERALLY!

We absolutely have no problem with people's use of tobacco products, celebrities included. They can and should do whatever they please in life.

But you gotta admit, the Grey's Anatomy actress has looked more attractive in some of her past pictures than the one below. Yikes, Katherine ...

Almost equally unappealing are those sunglasses! Ack!

Katherine Heigl stars on Grey's Anatomy.

At least until scorned writers murder her character.

In any case, she will always star in our fantasies at The Hollywood Gossip. But is this celebrity's fashion dreamy or just plain lame?

Trying to add some pop to her white slacks with a red-hot Krisa tank, the actress looked summer-ready for a day of errands in L.A.

But are you a fan? Tell us below ...

Katherine Heigl fashion: Love it or Shove it?

Katherine Heigl was recently named the Most Desirable Grey's Anatomy star to be bludgeoned over the head with a tire iron by the ABC show's writers Woman in the World by askmen.com readers.

Evidently, though, former Days of Our Lives star Lisa Rinna is already challenging Katherine Heigl for that prestigious honor.

The actresses were recently spotted wearing similar rainbow bikinis. Drool over each below and then let us know: Who looks better?

Grey's Anatomy star Katherine Heigl was named the world's most desirable woman by Askmen.com. Those men asked to participate in this survey may be smoking something, but she is pretty hot, we will give them that.

Here's a photo of her that may give you some idea of why she won. It's no Katherine Heigl nude, sorry, but it's still pretty sexy in a classy way ...

Katherine Heigl hates her own show, Grey's Anatomy, but the men love her.

Here's the full top 10, as ranked by that website, with hot photos of each below. Click to enlarge the following hotties!

1. Katherine Heigl
2. Alessandra Ambrosio
3. Kate Beckinsale
4. Eva Mendes
5. Jessica Alba
6. Scarlett Johansson
7. Jessica Biel
8. Rihanna
9. Marisa Miller
10. Adriana Lima

No one can debate two things about Katherine Heigl:

1. She never shuts the heck up.
2. She has an absolutely killer body.

What's the Grey's Anatomy star's secret when it comes to the latter?

"Work the muscles on the back of your body more than the muscles in the front of your body," says her trainer Harley Pasternak.

"Exercises like dumbbell back rows and tricep extensions help with improving your posture, lifting your boobs up."

So if you want to look hot from the front like Katherine Heigl does, get started pumping up your back at the gym!

Oh, and don't remove your name from Emmy consideration as a passive-aggressive slap at your own writers. They hate that.