No no, not at all. How many people someone has slept with is their own business. You just open yourself up to a label like whore if you live your life, whilst making your way through partners, on the front of magazines and tabloids.
Does she edit those magazines then? The nature of their fame, and hers (she was a succesful model before she dated any footballers) mean that the tabloids are bound to have been interested.
All she's done is allow herself to be seduced by the 'glamour' of dating rich footballers.
Its no different to the fittest girl in your year at school, being unobtainable to the normal lads, because she was impressed by an older boy with a Citroen Saxo and cash in his pocket.