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."