Astronaut
The first civilian in space was Valentina Tereshkova aboard Vostok 6 (she also became the first woman in space on that mission).
Tereshkova was only honorarily inducted into the USSR's Air Force, which did not accept female pilots at that time. A month later, Joseph Albert Walker became the first American civilian in space when his X-15 Flight 90 crossed the line, qualifying him by the international definition of spaceflight. Walker had joined the US Army Air Force but was not a member during his flight. 
The first people in space who had never been a member of any country's armed forces were both Konstantin Feoktistov and Boris Yegorov aboard Voskhod 1.
CoCo Brown
Brown is scheduled to go on a trip to outer space in 2016, which will last approximately one hour. The flight will be arranged by the Space Expedition Corporation (SXC), a Netherlands-based space tourism company. This opportunity for her arose in 2012 when she received a "space luncheon" invite by a concierge she knew after another person canceled their appearance at the event. She began training for the flight, with help from XCOR Aerospace, that same year. In preparation for the trip, she had to earn a pilot's license. She will be the flight's co-pilot. If the trip takes place as planned, it would make her the first pornographic actress in space as well as the fourth African American woman, after Mae Jemison, Stephanie Wilson, and Joan Higginbotham.