This is very un 'sisterly' of me to say this, and I am certainly not slim and gorgeous myself (very far from it), BUT you cannot be a successful or watchable dancer if you're all lumpen and heavy. And, I'm sorry, but Natalie C is lumpen and heavy. Its great and fine that she doesn't have a problem with it - that's cool - BUT she won't make much of a dancer. She also seems just a little bit too pleased with herself much of the time.
In short, noooooooooo to Natalie C for SCD!! Sorry Sonia.
(Now she'll probably partner my beloved Vincent, lose 4 stone and win the series. That'll teach me!)