Ashton Kutcher, Mila Kunis Sent Danny Masterson's Judge Letters of Support Before Sentencing

Danny Masterson had 2 of his "That '70s Show" costars in his corner ahead of his sentencing ... Ashton Kutcher and Mila Kunis wrote letters of support for the actor. The letters, obtained by Tony Ortega, were sent to Judge Olmedo before Masterson…