Paul “PK” Kemsley fired back at estranged wife Dorit Kemsley’s claims that her contract for The Real Housewives of Beverly Hills can explain her so-called “excessive” spending habits. “Her contract does not state any requirement to update and maintain her wardrobe, make up and hair as a condition for her employment,” PK, 58, alleged in new court documents filed Thursday, July 30, and obtained by Us. “[Her] contention that she must purchase high clothing and related accessories to appear on this television show is not supported by any agreement or contract requiring such expenditures.” He claims that from December 28,…