Following the tragic loss of her son, Michael Blosil, Marie Osmond has found comfort in the arms of her family and close personal friend Mary Hart, the host of 'Entertainment Tonight.'

"Marie and Mary are incredibly close girlfriends," a source tells me. "They talk all the time and even went to cheer on Donny together when he was competing in 'Dancing With The Stars.' Now Mary is being the best girlfriend anyone could possibly have during this horrid time."