Paris Hilton has branded her mother one of her biggest love rivals, because she's so sexy. The hotel heiress insists she struggles to compete with Kathy Hilton because all her boyfriends are immediately smitten by her looks. The 25-year-old says, "My mom's so hot. All my guy friends love her and want her. "She's a Milf. A Mother I'd Like to Eff." The pop star adds her mum's loving relationship with husband RICK has inspired her to wait for the perfect man before committing to marriage. She tells British magazine Attitude, "My parents are cool and it's cool that they've been together for so long. "I want to find someone like my dad because he loves my mom so much. They've never spent a night apart since they were married."