Emily Simpson and Gina Kirschenheiter are arguably some of the best newbies to hop aboard the Real Housewives of Orange train. Since their arrival, some other newbies have come and gone including Noella Bergener and Dr Jen Armstrong. But, now there’s a newcomer in town for season 18 – Katie Ginella. The current Real Housewives of Orange County cast features some ladies who’ve been around for many seasons such as Heather Dubrow, Shannon Beador, and Tamra Judge. Despite the ladies’ long history, Tamra and Shannon are no longer on talking terms. And, Shannon also revealed that the group went on s…