IMO she resembles the statue of liberty, but she's attainable which is what men like more than anything
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She is attractive.
Even Joan mentions it when she brings up Peggy’s weight gain,

I thought it was more about her being the new girl than being super attractive. Everyone wanted to bang her in the beginning, then they got over it.

Peggy is cute, she's young, intelligent, warm, thoughtful, sweet and competent.
Do you have any idea how rare that actually is? Besides her function on the show in the beginning was to portray how men actually just acted like dogs in this era.

It was also Don who said that she looked like Irene Dunn.

http://bit.ly/1bggYnC

Well. Don said she was "cute as hell". Freddie said she looked like Irene Dunn. Joan said she had darling little ankles.
Aside from the opinions of some of the characters she had a cute figure, cute hair, and cute outfits (aside from her fat/pregnant period).
So I would say she is cute there's a certain element of attractiveness in appearance which certainly can be overlooked or squelched by her annoying, pretentious, self-aggrandizing behavior. In other words, sometimes she got too big for her britches which diminishes any attractive quality she might have had.

She's horrid..

Back in the 60s,men hitting on women in the workplace had more to do with men trying to look like studs than the attractiveness of the women. That was exactly what was going on when all the guys lined up to inspect Peggy, the new girl.
maggimae83

"Attractive" is a subjective term. I don't really know where you're getting that we were supposed to believe "all of these men" were falling for her. There were what, maybe 6 of them at the most?
Not everyone is attracted to the same types of personality either and this is proof.

Most affairs at work happen because of simple availability and convenience. Married men get bored at home, and any nice woman at work who's reasonably attractive is fair game to them (Coolidge effect). Peggy had a good figure. Back then, she's a 5. In today's world, where obesity is epidemic, she'd be considered a 6 to a 7. Add in that she's willing, and nice, and that's all it takes!

you're supposed to believe that all of these men are falling for her for some reason
That doesn't happen much later on. I think they wanted to emphasize how her initial work as a secretary wasn't taken seriously back then primarily for being a woman. You don't need to keep thinking whether it'd happen in real life or not.

I agree. Perhaps maybe it precisely has to do with how prudish or goody-goody she seemed, and it prompted the men to see "getting her" as a challenge. Besides this, I just started watching. Can anyone tell me why Peggy got the birth control pills on her first day on the job? Did the other secretary tell her that she would have to have sex in order to keep the job? What was her motivation?
When you think of garbage, think of Hakeem!
Folks, calm down! This is not the last chopper outta Saigon!

Moon is right. She was the "fresh meat" of the office some gross conquest these heels wanted to be first to tap. Hello "frat boy" attitudes of the 60s in a business like that.
It was NOT about Peggy being received as some bombshell. These creeps objectified any new girl in the office. Maybe you should rewatch S1. It's referenced all the time the motivation for ogling Peggy. Joan even says, "you're not much, so you might as well enjoy it." It was about Peggy being new., and being Draper's "girl" made it all the more of conquest for some of these toolboxes.

It's clearly some sort of scoring game. Who can hook up with the new girl? Do any of them act like that after she's been there a while? Of course not, because she isn't the new girl any more.

Consider the daffodil. And while you're doing that I'll be over here looking through your stuff.

You need to watch the first 3 to 5 episodes again. Every man in the office younger than Don practically salivate when she walks by. It's not believable at all.

Pete initially got with Peggy for the simple fact that he could. He was an entitled spoiled brat and figured he could do what he wanted and most of the time he did.
Through the seasons we saw Pete there was a inner sadness about him and those times with Peggy they probably connected on that. He was too flawed for have a real relationship with Peggy and she picked up on that and they just used each other for the time being. I can't recall when the last straw for Peggy was but I'd remember the time she was dancing the twist and he got in her face and said something like "I don't like you like this.. How dare you enjoy yourself!" Again, he had issues.
Jesus would support Universal Health Care

Am I missing something? The show didn't seem to push Peggy as drop dead gorgeous or totally desirable in some vixen sort of way. She wasn't absolute repellent either, and the men she did get seemed quite realistic, whether it was transient or longterm relationships.
Chemistry is also more than looks, so you take chemistry with compatibility in areas of smarts and personality, and it's realistic men like Ted and Duck fell for her. (Heck, neither were amazing prizes, especially Duck.) Pete could be thrown in that camp, but he first pursued her as a drunk worm, not really ready to be married, and Peggy was "available" as the new girl. Future encounters were also as vapid.
He was never going to leave Trudy for Peggy. Are you referring to Pete's proclamation that he really wanted Peggy over Trudy during that one conversation in "Meditations in an Emergency"? Most everyone was out of sorts because of the Cuban Missile Crisis. I didn't take Pete's words as a genuine declaration of love. He was distant from Trudy, and he seemed to romanticize a relationship with Peggy during that time, but if she jumped at the chance, he would not have followed through.
The men Peggy gotin whatever capacitydidn't seem to be unrealistic to me at all.

I find Peggy attractive. Maybe not conventionally. I think she has an attractive personality, as well.

She was average. I thought it was completely laughable the time she got all gussied up, made an appearance in the conference room, and the guys were all gaga. Hardly.

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I can't just imagine the wheels slowly clacking in your mind "I don't find Peggy attractiveso no one canand a woman's only point to being on a show is attractivenessdoes not compute."

Consider the daffodil. And while you're doing that I'll be over here looking through your stuff.

But Pete isn't desired by anyone except Trudy and Peggy (in the beginning). Peggy is treated like a piece of raw meat dangled in front of ravenous tigers. Almost every man in the office comments about her looks and flirts with her in the first few episodes. I just didn't find it believable at all. She was not attractive at all. She was literally just an average woman.

Why not? Obviously were were led to believe that Pete was incredibly handsome! I had an issue with Pete for the exact same reasons you stated above regarding Peggy.
These are supposed to be normal people. Are you of the conviction that only good looking people can be desirable?
People are attracted to all sorts of traits and behaviours, looks are secondary.
Personally, I believe that Peggy is a lot more attractive than Pete, but that's MY opinion.

It's obvious you have no understanding of Peggy's character.
In reality, there were few men who "fell for" her, and while Pete was a jerk, there was no question that he wasn't going to leave Trudy for Peggy, and Peggy knew that.
Peggy and Pete had a certain connection and understanding Pete did not have with Trudy, but it wasn't enough. He wanted Peggy for an affair, but ultimately no more than that.
Don, Pete, and Roger, plus many more male characters on the show, consistently talk down to those they consider beneath them, ncluding Peggy,. That's okay and nor worth commenting on, only Peggy's occasional missteps?