The full sister of Riboletta and War Chant's half-sister will face each other while making their racing debuts on Wednesday at Hollywood Park.Mike Smith will guide champion Riboletta's sister, Tamara Princess, in the 6 1/2-furlong race. Trained by Eduardo Inda, who also conditions Riboletta, Tamara Princess will break from post four in the six-horse field comprised of 3-year-old fillies.Double Cat is the third product of champion Hollywood Wildcat, who is also the dam of Breeders' Cup Mile (gr. IT) winner War Chant (by Danzig). Double Cat is by Storm Cat and, like War Chant, trained by Neil Drysdale. Gary Stevens will guide Double Cat from post five.The race is the second race on Hollywood Park's Wednesday card.