Nikki Bella chose her wedding dress 30 minutes before she walked down the aisle. The 38-year-old star married Artem Chigvintsev in August, and Nikki has now revealed that she made a last-minute decision about the dress she wore for her big day. She shared: “People are going to think I’m crazy. I didn’t choose my ceremony dress until 30 minutes before I walked down the aisle. My poor mother!” Nikki actually had four different outfits on her wedding day. And Nikki has promised to lift the lid on her wedding preparations in ‘Nikki Says I Do’, her four-part E! special. She told Brides magazine: “T…