Irina Shayk admires Bradley Cooper for being sober.

The Russian model, who previously dated Portuguese soccer star Cristiano Ronaldo for five years and started romancing the 'Burnt' actor earlier this year, admits her mother advised her to ''never date a guy who smokes or drinks.''

Asked about the best advice she has ever received, the 29-year-old beauty said: ''Actually, I remember my mom told me never to date a guy who smokes or drinks. My father played hockey and boxed, and my mom loved the fact he was really healthy.''

Four-time Oscar nominee Bradley, 40, previously admitted he made a decision to stop drinking and using drugs in 2004 because they were holding him back from achieving his dreams.

Meanwhile, Irina insists she is ''low-maintenance'' when it comes to relationships.

She said: ''A cute card is always nice. I may be Russian, but I'm low-maintenance.''

But the Sports Illustrated star tries to get as much sleep as possible to maintain her good looks.

She said: ''The best trick make-up trick is to get a lot of sleep - like, 12 hours.

''When I don't sleep enough, I get cranky and crazy.''

Irina claims she used to get bullied for her looks when she was younger.

She explained to US' OK! magazine: ''When I was young guys actually made fun of me. I was tall and had darker skin and bigger lips, and they called me 'Stick' because I wore high heels. I would wear skirts - never pants - to school, and they were like, 'Oh, look, Stick is walking around with her high heels!' Yeah, that was sad.''