MADONNA's love affair with the gym is showing no sign of waning.

The Queen of Pop, whose hits include Material Girl, showed off her incredibly veiny arms after having dinner with JESUS LUZ in London. 

Madge prides herself on keeping in super shape and at the age of 50, she looks remarkably trim. 

However, those pumped biceps could be a sign she's overdoing it. 

She'd make a mean arm wrestler, mind...

Cameron Diaz & Megan Fox Freaked Out By Horror Films

Two of Hollywood's newest scream queens, Cameron Diaz and Megan Fox, star in upcoming horror films, but admit they're scaredy cats when it comes to watching them. 

Even the previews can be too much for Diaz. "You know what terrifies me? Trailers to horror movies!" she told PEOPLE while previewing her psychological thriller The Box at Comic-Con over the weekend. "I just can't watch them. I hate horror movies. I'm always afraid." 

The actress especially can't watch it at night, she adds with a shudder. "I kind of want to look, but I'm always afraid that I'm going to look too long and see the one image that I'm not going to be able to get out of my head for at least a week every night before I'm going to bed," she said. 

Fox, who stars in the sexy-gory scare-fest Jennifer's Body, just avoids them altogether. "I don't ever, ever watch scary movies because I have a very intense fear of the dark," she said. "The last horror movie I saw, I think was called Tooth Fairy, and I was like 15 years old and I saw it and I slept with my mother for two weeks afterwards. I get really affected by them." 

Even her own movie gave Fox a good fright when she was recording extra dialogue for a scene in which the sound designers had already punched up her earlier screams. "I literally jumped and screamed inside the looping booth," she said. "It frightened me and it shook me up for five minutes … I was like, "Holy sh-t! That was really scary!" 

There was something liberating in taking on a scary role, however. "For me to be able to play something that I would normally be frightened by was really intriguing and interesting," said Fox. "It's cool to see myself being able to scare people because I'm just a little girl."

How Scarlett Johansson Shaped Up for Iron Man 2

Even enviable-looking Scarlett Johansson couldn't disguise her fear at having to don a skintight catsuit for her Iron Man 2 role as the Russian spy Black Widow. 

"I kicked some major butt," the actress, 24, told PEOPLE at Comic-Con of her training regimen to make her a shapely superhero ready for acrobatic battle scenes. "It was many, many, hours, days, and months of stunt training and strength training, but it's fun because I had a goal. The goal was the Lycra catsuit." 

Was she happy with the results? "Finally I was, yes," she said with a laugh. "You put that much work into something and you put it on and you better be happy with it." 

When it came to putting on the catsuit, "It was crazy to see it for the first time – everything all zipped up and all the weapons in there, bracelets on, the whole look. It was pretty sweet, I have to say," she says. 

As for the impression it made, "Certainly walking on set, because a lot of the people that worked on the film were fans of the comic and of course they knew the Black Widow – they were all super excited to see the Black Widow," she says. "When everybody in the crew were like, 'That looks awesome!' I knew. Like, 'Okay.' " 

Low Carbs
"She was wearing an unforgiving costume," concurred Johansson's Iron Man 2 director Jon Favreau, who was impressed by his star's physical commitment to the role. "She didn't eat much, that's for sure. She likes food, as do I, and she was definitely on a low-carb diet and training very hard. It was amazing." 

After viewing Johansson's stunt work, Favreau says, "I think people are going to be very impressed when they see her. It's totally different than anything you've seen her do before." 

And while Johansson's husband, Ryan Reynolds, has already showed off his beautiful bod in The Proposal, the couple also share something else in common: their reading material. 

With Iron Man 2, which opens May 7, 2010, making her a Marvel Comics superheroine, Reynolds has just landed the role of DC Comics' Green Lantern. As a result, says Johansson, "I have quite a few stacks of comic books," she says. "We're in completely different [comic-book] universes over there, but it's something that I'm certainly delving into for the first time. There is quite a stack!"

Kelly`s hobby - electronic book reading

Singer Kelly Osbourne has developed a new hobby—electronic book reading. 
Since writing her first book, rocker Ozzy’s daughter, 24, has launched the Sony Summer Reader Roadshow – a library for electronic book reading.

She is travelling the UK in a vintage ice cream van showing off the new age of book reading.

“eBooks are a great idea. It’s a nightmare carrying a bunch of books. This is my summer gadget!” the Daily Star quoted her as saying. 

Osbourne recently launched a vicious attack on American singer Stefani Germanotta, aka Lady Gaga, saying that the pop sensation “has everything” but a pretty face.

She said that she found the 23-year-old singer talented, but when it came to her face, there was nothing much to boast about.