Katie Holmes has never been one of those full-figured actresses in Hollywood, quite the opposite, but she still has a ferocious diet and a workout schedule that is said to be behind the recent collapse she suffered outside her favorite restaurant, Joan's on Third in L.A.

Katie was not looking well when she first went in to have lunch, thin and pale, she barely had the power to crack a weak smile at the paps snapping frantically. As she exited through the back door, Katie seemed unsure of her balance and firmly grasped the door frame to avoid a fall. Seconds later, her bodyguard came up and took her to her waiting SUV.

Sadly, this is not the first dizzy spell reported on Katie Holmes. In the past weeks they seem to have become more and more frequent and the main reasons behind them are her diet and her workout schedule insiders say. Also, there has been a rumor that Tom's lifestyle might actually be too much for Kate to bear, she just can't keep up with him. Says a source "Katie doesn't get enough sleep - and hasn't for months now. She's tired and drained much of the day because Tom is so wired, and they stay awake until after midnight. He has boundless energy, and she just can't compete".

And finally, the decoration of the family home is also putting a lot pf pressure on the actress. It seems that Tom sees their home as a status symbol and he has put Katie in charge to come up with something unrivaled which he can brag about. And Katie is currently banging her head against the walls trying to make ends meet. It is not known which one of these factors is having the worst effect, but the results are showing: at this rate, Katie will dwindle away before our very eyes in a matter of months.