Many Bollywood heroines are beautiful but when some of them don't wear any makeup, I wonder how some people call them beautiful! Anyway, whether there are 7 or 8 wonders in the world is still disputable and there are many lists that describe them. (http://en.wikipedia.org/wiki/Wonders_of_the_World) So, all in all, this question cannot be definitely answered. Thread should be closed IMO.
The original list of wonders of the world featured only seven sites, so I've no idea where you got eight from. The original list was compiled by an Ancient Greek more than 2,000 years ago, so the Taj Mahal wouldn't even have been built then. And the Great Wall of China was never on the Greek list. There was an attempt a few years ago to compile a new list, for which people could vote, which resulted in the ludicrous situation that Christ the Redeemer in Rio de Janeiro made the list (because everyone in Brazil voted for it), while not a single Gothic cathedral in Europe was included.