Verified answer

Compare the size of her arms,hands and cheeks with her belly.

Usually, I cannot.

I have made the mistake many times over, of asking "fat" women how far along they were...yikes.

But it's not my fault that their stomach was sticking out like that! Sometimes their legs were tiny and so were their arms!

Ask, always ask before making assumptions.

If she's not pregnant and just fat, she'll love that fact you thought she was carrying a baby.

Whats the difference? LOL

The fat ones will drink alcohol.

Wave a burger in the air...

By ultra sound

By asking when they are due.

you can easily tell. lol