John Mellencamp Files for Divorce, Prenup in Place

Credit: Dimitrios Kambouris/VF1/

And that's a wrap for John Mellencamp and Elaine Irwin.

After announcing their split late last month, the rocker, 59, filed divorce papers in Brown County, Ind. which suggest a drama-free split, documents at Radar Online confirm.

The papers indicate that Mellencamp and model Irwin have been separated since September 2010 -- coincidentally the same month as their 18 year wedding anniversary. The documents also confirm that the couple signed a valid and binding Prenuptial agreement -- as well as a confidential child custody agreement.

The pair have two kids, ages 15 and 16.

The "Pink Houses" singer seems to have already moved on since the end of his marriage: He and actress Meg Ryan have been quietly dating since mid-fall.