Celebrities Liv Lo, Allan Wu and Nikki Muller share their secrets to staying in perfect shape and feeling sexy.

Model/actress Liv Lo, 28

What are your secrets to looking good naked?

Confidence, exercise and maybe a bit of dim lighting. I am always shocked when girls tell me about how they stay thin with diet pills, surgery or by starving themselves.

It's almost as if they want to have a good figure from lying down all day. Impossible! Even Marilyn Monroe did a bust-firming exercise routine every morning.

For myself, yoga is key. It trims fat in any unwanted location and helps correct posture. The strength and flexibility I get from yoga keep me strong and fit.

When do you feel sexiest?

When I make an effort to dress up. There is empowerment in an appealing appearance and I definitely notice it when I have a dozen extra pairs of eyes on me.

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