Kim Kardashian's sisters Kendall and Kylie said they aren't worried about what dresses the star will pick for them.

The two girls are Kim's youngest sisters and will be bridesmaids when she marries Kris Humphries later this month.

Asked about their dresses, Kylie said to Access Hollywood: "She does [the choosing] for us. It's cool to all be matching. Like, if I was a bride, I'd want to pick my own [bridesmaids' dresses] so everyone is matching."

The girls were asked if they are worried about what Kim, 30, will choose for them.

Kendall said: "Not with her."

Kylie then added: "Not with Kim, come on!"

However the girls added they aren't sure what colour it's going to be at the moment.

© Splash News