"I think Britney Spears doesn't always make the best of what she's got. She's a really pretty young girl but, she could do more," femalefirst.co.uk quoted Snowdon as saying.
Snowdon, who was associated with reality show "Britain's Next Top Model" between 2006 and 2009, believes there are a lot of celebrities who get their clothing choices right every time, be it on the red carpet or their day-to-day lives.
"Natalie Portman's got an elegant, understated style and I always think that at award ceremonies she looks great. And Sarah Jessica Parker too, she always looks quirky - she has fun with it," she said.
"Olivia Palermo kind of gets it right every time; daytime, casual, her events look is good too. She's really individual - she's just got her own style and the ways she puts things together," she added.