By Breaking Celebrity News Staff

Marriage or not, Demi Moore is still paying for estranged husband Ashton Kutcher’s tan, Star magazine has learned exclusively. 

Moore, a regular at the high-end Los Angeles chain Lé Beach Club Tanning Resorts, has placed a special provision on her count that states, “Ashton can use,” an insider told Star.

And he does -- the insider said that recently, “Ashton came in to tan and used Demi’s account.

"He just assumed his tan could still be charged to Demi...he didn’t offer to pay or anything...he didn’t say his name or anything either; he just walked in and assumed everything would go as usual,” the source said, adding there was no issue.

Meanwhile, Moore has yet to change her username on Twitter -- “mrskutcher” -- telling her 4.3 million followe