Use Format Painter to copy any formatting from one cell to another...
-Click on cell(s) with format that you want to copy
-Click on the Format Painter (little paintbrush in your toolbar)
-Click on the cell(s) that you want to copy the format to...
~Val
Sorry, I don't think I explained my problem correctly.
I don't want to know how to copy the formatting and contents manually but rather I a cell on one sheet to exactly mirror a cell on another sheet "automatically". In other words when I type something into "sheet1!A1" and change part of it to bold or manipulate the font size I want "sheet2!A20" to look exactly the same.