Jem Stone weight goes up and down quite a lot.
Well, one prime example here is Laura Orsolya. She gained massively over the years. Have a look at the following link:
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Scroll down to "free picures" and you will be surprised about how much she changed from her Scoreland-time to now.
The past:
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And now:
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I guess she added more than 40 lbs to her 5'10 frame. What do you guys think?