Woodward told Star magazine that she did not like comparing the two judges but admitted that the Australian was ahead of her fashion rival.
"I definitely think Dannii looks better this season," she said. "Having a baby has given her the sense of being the woman she is."
She added: "But I don’t like to get involved because they are both really great paragons of beauty for their own age ranges, so comparing them is a bit weird."
Louis Walsh previously praised Minogue's style and said that she looked "incredible".
> Dannii Minogue 'hires Beckham as stylist'