Despite reports likening Sheen's new 'do to Spears's impulsive decision to go bald, the actor's close friend tells PEOPLE any parallel is absurd.
"For seven years [doing Two and a Half Men,] Charlie had to have the same haircut," says Mark Burg, an executive producer on the show and longtime Sheen pal. "Now that he's completed his contract, he decided to get a haircut and he used a No. 2 buzzer. No big deal. He likes it and likes that it's easier to take care of. It looks good!"
In recent months, Sheen, 44, has been in rehab and is facing an assault charge after a heated Christmas day argument with his wife Brooke Mueller.
The actor wants to leave Two and a Half Men after this season.
Reporting by ELIZABETH LEONARD