For the person in London currently searching Google for 'How big is Vanessa Feltz's cleavage', I can end your quest right here.
It's big. Bigger than even your 1280x1024 desktop resolution could handle. I mean it's really, really big.
I wish you well and hope I answered your question. I now feel that my afternoon, spent fruitlessly looking for a post-Channel 4 job, has not been totally wasted.