Former Pakistan prime minister Imran Khans ex-wife Reham Khan has tied the knot with a US-based Pakistani actor and satirist Mirza Bilal.The 49-year-old British-Pakistani journalist, who was married to Khan between 2014 and 2015, announced on Twitter her marriage to Bilal in a simple Nikah ceremony in the US city of Seattle.We had a lovely Nikkah ceremony performed in Seattle with the blessings of MirzaBilal parents my son as my Vakeel, Reham said in a tweet.She also shared pictures of her and Bilal from the nikkah ceremony on Twitter.