Jessica Simpson is so proud she had “determined patience” to lose 100 pounds. The 41-year-old singer-and-designer put on the excess weight when she was pregnant with her third child, three-year-old daughter Birdie Mae, and although it took her three years to drop the dress sizes she is delighted that she got the inches off her waist in the right way. In an appearance on daytime TV show ‘The Real’, she said: “It took three years, I call it determined patience. “I believe in setting small goals for yourself because in my life and how I’ve done it, there are easy ways to throw in the towel and ju…