Defamer has some interesting before-and-after shots of Scarlett Johansson, who seems to have pulled a Jennifer Love Hewitt and lost substantial weight after complaining about Hollywood’s diet obsession.

Here’s ScarJo in 2006:

“I try to stay fit and eat healthily, but I’m not anxious to starve myself and become unnaturally thin. I don’t find that look attractive on women and I don’t want to become part of that trend. It’s unhealthy and it puts too much pressure on women in general who are being fed this image of the ideal, which it is not.

“I think America has become obsessed with dieting rather than focusing on eating well, exercising and living a healthy life. I also think that being ultra-thin is not sexy at all. Women shouldn’t be forced to conform to unrealistic and unhealthy body images that the media promote. I don’t need to be skinny to be sexy.”

And then on Tuesday, according to a source tattling on her to Page Six:

“She was talking to Thandie Newton about the rigid diet she’s on,” our spy said of the star of the upcoming “Iron Man 2.” Joseph Fiennes, Eva Herzigova and Marc Newson were all there and ogling Johansson, who “was really working it,” according to our snitch.

These photos don’t lie. In the new photo (on the left), she’s not in scary skinny territory yet, but girlfriend has definitely dropped a dress size or two — her jawline is sharper and her arms look more lean. And someone’s let the air out of her chest. But I’m sure that didn’t pass most of you by.

Still, isn’t there ANYBODY in Hollywood who is secure enough not to give in to the pressure? I really thought Kate Winslet might be the one, but I was wrong there too.

Gwyneth Paltrow knows she needs to bring her A-game to topple Tom Cruise, and I have to applaud her latest effort here. She must really want to win this.

On the British morning news, the mother of two tried to relate to the little people by complaining about mommy guilt:

Chatting on GMTV this morning, the actress admitted moving to America to film Iron Man 2 will be tough.

Gwyneth said: “That’s hard, and I feel – I’m feeling mother guilt because my daughter’s looking forward to going, but my son always says, ‘I don’t want to leave my London house’ - and I feel pretty guilty about that.

“I just try to say, ‘Well, but we’re going to swim and it’ll be sunny.’ I try to point out the positives.”

Asked whether fame and parenthood works well together, Gwyneth said: “I barely ever do films – I’m with them almost all the time.

“But in a way it makes the transition harder. I feel like if I worked all the time, then they would be used to it.

“But when I’m always there, and I’m always doing school runs and I’m always around – and then I just disappear for 14 hours a day to film – it’s hard.”

A high class problem to have. The alternative, I suppose, to uprooting her young children against their will would be to give up acting like she said she would. Standing in stark comparison with many mothers who have no choice but to get a job, it’s not like she needs the money (unless, it’s possible, she does — that would go a long way in explaining GOOP). And she can’t say she’s sacrificing for her art: She’s making Iron Man 2. I enjoyed Iron Man 1 as much as any comic book geek, but an arthouse indie it ain’t.

Honestly? I don’t think she wants to work as much as she wants to have something to complain about.