The twosome wore masks while they were in the store and en route to their car, Rosalind was seen taking hers off.
Ross was Gibson's first serious relationship since his very public split with Oksana Grigorieva in 2011 that was marred with accusations of alcoholism and domestic abuse allegations.
He was even caught giving the young singer-songwriter a neck massage at a popular Hollywood restaurant.
The couple named the 5 lbs.
The two married in the summer of 1980 and went strong for 26 years until they separated in 2006 thanks to rumors of him cheating.