The 24 year-old told British You magazine: 'I'd love longer, leaner legs – they're the one thing I always work on when I work out.
'If I train too much they bulk up and get muscly, and if I don't train enough they go wobbly. I can’t win! I find that going to the gym is the only thing that really makes a difference to my body.'
Conrad admits she wears high heels to make her feel skinnier.
The former Hills star said: 'For shoes it has to be Christian Louboutin. I'm a heels girl – they improve my posture and make me feel slimmer.'