I thought that she had a boy, followed by twins?

What's up with her arms? They are so boney and flabby?

That's not flab on her arms -- it's loose skin. As you age, your skin gets thinner and loses its elasticity, and it starts to hang rather than cling to the body. This also happens when you lose weight because your fat cells shrink, but your skin doesn't (that's why so many women get tummy tucks to remove the excess stretched-out skin after pregnancy or major weight loss). Considering SJP is getting older and appears to be losing weight, it's not surprising that she has loose skin on her arms. They would actually probably look better with a little 'flab' to help fill out & shape the skin.

I wish women in Hollywood realized that losing too much weight only makes them look older, not younger. If their goal is to look young and healthy, they need some fat on their bodies & faces! Or they could just try accepting that aging is a natural process, and it's okay to look the age that you are.