Please help, I want my Kenyan girlfriend to be in UK with me
My girlfriend is from Kenya, we are together from August 2014. Beginning of May 2015, I flew to Nairobi, we spend 22 day together, I wish, I could stay longer, but I have to go back to London because, I used all my holidays for this working year. I want, invite my girlfriend to visit me in London we can spend Christmas holidays together. What kind of papers and proof we need to get her visa, can please someone can help me, please.