Answer:
No he has a sister and in the video he put up called "akward" he has someone who looks a LOT like him.... I'm just thinking that it's a twin, but it's really not.
To Person above ^
the so called "twin" Of Kevin's is not his twin... its just Kevin.
because at 1:50 of the video you can see the cut and the lighting's different.
In conclusion. Kevjumba DOES NOT have a twin.
There are a lot of dumb and gullible people in this world. It is called spilt screen!
He doesn't have a sister, he has a brother. He said that in his video ''AWKWARD''