Hilary Duff has finally pulled the trigger on her marriage, filing for divorce from hubby ... and it looks like Mike's wild night in Bev Hills was the tipping point.
Sources close to the couple tell TMZ ... it's NOT a coincidence Duff filed her docs a day after the Daily Mail reported Mike was drunkenly propositioning women at Mastro's steakhouse in Bev Hills.
In the docs, Hilary asks for primary physical custody of their son, Luca, who turns 3 next month. She wants Mike to have visitation, but sources connected with the couple say she's concerned that his partying and drinking could adversely affect their kid.
The couple has a prenup, but neither spouse is struggling in the money department. Hilary wants her earnings and other stuff to remain her stuff.
welp