Mischa Barton is determined Nicole Richie's baby will turn out to be a future rock'n'roll star. The O.C. actress recently gifted the pregnant socialite with a collection of infant Rolling Stones and AC DC T-shirts in a bid to introduce the tot to legendary bands at an early age. She says, "I got her a bunch of rocker tees for the baby, with different types of logos of rock bands on them and she loved them." But the 21-year-old was careful not to select any pink or blue items - because the Simple Life star still doesn't know the sex of the baby. She adds, "She wants it to be a surprise."