Rocker John Mellencamp's model ex-wife Elaine Irwin is set to marry for the second time.

The beauty split from Mellencamp in 2010 after 18 years of marriage, and their divorce was finalised the following summer (Aug11).

Irwin subsequently began dating media mogul Jay Penske, and now it has emerged they became engaged in October (12).

A representative for Penske tells New York Post gossip column Page Six, "I can confirm Jay and Elaine were engaged around late October last year, while they were on a trip to India."