Jessica Simpson says Eric Johnson proposed to Led Zeppelin song

Nov. 13 (UPI) -- Jessica Simpson says husband Eric Johnson popped the question to a Led Zeppelin song.

The 37-year-old singer and designer posted a throwback photo Sunday while reflecting in an Instagram post on the seven-year anniversary of her engagement, which happened Nov. 11.

The black and white picture shows Simpson smiling as she shows off her engagement ring. The star appears to be sitting on her porch while surrounded by rose petals.

"Got engaged to 'Since I've Been Loving You' by Led Zeppelin on 11/11 at 11:11 AM 7 years ago. Still loving this Man is the easiest part of my life #HowtheWestWasWon," she wrote.

Simpson and Johnson got engaged after six months of dating, and married in Montecito, Calif., in July 2014. The pair, who share 5-year-old daughter Maxwell Drew and 4-year-old son Ace Knute, celebrated their seventh anniversary as a couple in May.

"7 years, 2 kids and a whole lotta love later #may21 #MAXIDREW #ACEKNUTE," Simpson wrote at the time.

Simpson previously told Access Hollywood that marrying Johnson shaped her identity more than motherhood, saying, "Eric is the best. Being married, for me, it defines me so much more than even having kids."