Hello. Most likely, I asked this before, but can't find the topic

The top is the original variable, represented in bit form.
The bottom is desired result. It is just each bit doubled, so final result occupies two bits.

Code:
11011101


11110011 11110011
Technically, I've done it a way that each bit of input variable is read, then written into another variables two times, next to each other.
This indeed works, but it is very slow. Is there any other method of achieving this?
I need this for font scaling..