IT'S GONNA BE A BOY !

Nicole Richie held a Wizard Of Oz-themed baby shower in Beverly Hills on Sunday.

The soiree was hosted by childhood friend Paris Hilton as well as Nicole's mom and half-sister.

Guests brought many gifts that suggest she's having a boy.

From NoMi boutique in L.A., guests picked up a pair of $50 baby sneakers for a boy, and a $50 Tummy T Jack maternity shirt with a picture of a boy on the front.

The baby is due around January.