The former Spice Girl, 35, who is expecting her fourth child with the footballer, told Allure magazine that she is ready to grow old gracefully.
“For the first time, I feel like what you see is what you get,” she said.
'This is me: the more natural hair, the slightly more relaxed way of dressing. I feel really content personally and professionally. I'm not freaked out about getting older.”
She added: 'I'm growing older with the most amazing man I've ever met – with my soul mate. Life's great.'
But despite not being frightened of getting older, she revealed that she does fear falling over in front of the paparazzi.
She said: 'I don't want to fall over. I just want to get to my car, because if I fall over, someone is going to shove a camera lens up my skirt and get a picture of my knickers, which is kind of not cool.
'[But I'm not] one of those people who goes out without any knickers on. I'm the complete opposite – I'll wear shorts under my skirt!'