Kate Upton is top of the pups

Blonde model tops Sun's Best Cleavage poll

IT'S official.... Kate Upton has the best boobs in the world.
In a special poll to celebrate National Cleavage Day on 27 March, we asked Sun readers to pick their favourite celebrity chest.
We gave them a shortlist of 30 busty beauties from every corner of showbiz.
And the 20-year-old model won by a HUGE margin - scoring a FIFTH of all the votes registered.
It's easy to see how she won.
Kate's curves have helped her become an overnight star - landing her modelling deals and numerous magazine covers.