Christie Brinkley Steps Out Looking Happy as Ever With Boyfriend John Mellencamp

Christie Brinkley can't help but smile when she's alongside her boyfriend, John Mellencamp!

The happy couple was spotted walking arm-in-arm in NYC on Sunday, April 24 — and we can't get over how adorable they look together!

Christie and John on April 24.

For their romantic day out, Christie, 62, sported black pants, a black shirt, a white trench coat and a stylish pair of loafers. John, 64, donned casual ripped jeans and a black blazer. The happy couple first began dating in September 2015.

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Christie has been married four times; to French artist Jean-François Allaux from 1973 to 1981, to Billy Joel from 1985 until 1994, to real estate developer Richard Taubman from 1994 to 1995 and to architect Peter Halsey Cook from 1996 until 2008. She is mom to a 30-year-old daughter, Alexa Ray, with Billy, a son, Jack, 20, with Richard and a 17-year-old daughter, Sailor, with Peter.

Christie and John on April 24.

John was married to Priscilla Esterline from 1970 until 1981, to Victoria Granucci from 1981 to 1989 and to former model Elaine Irwin from 1992 until 2010. He also dated actress Meg Ryan from 2011 until 2015.

Christie previously opened up about her relationship with the "Jack & Diane" singer. “I think it’s a very, very exciting time. I am happy,” Christie confided to Closer. “It’s very exciting to find that you are open to something.”