late Queen Elizabeth’s first cousin Prince Michael of Kent — shed some light on the 75-year-old sovereign’s habits.The “Two and a Half Men” star, 43, called Charles a “very dear friend” in a new interview with Tatler.“I spend a bit of time with him,” she shared. She explained that the former Prince of Wales often stays up late writing letters after the work day of carrying out royal engagements is done.The “Sanditon” actress continued: “You see how he works all day long, has a quick supper and then disappears until about 4 a.m.