Jennifer Aniston looks curvier during her presence at the NBC Friends reunion. This cause rumours that she might be pregnant.

According to New Idea’s recent report, Aniston's new curve is due to fertility treatment.
One source revealed, ‘Jen’s put her body through hell trying to make her motherhood dreams come true'.
‘She’s prone to miscarriages and so she doesn’t want to take any chances this time. She won’t make any announcements until that bump is nearly six months along.'
Source