Following Jagger's birth in July 2015, it was rare for the couple to share pics of their little girl, but they've seem to grow less shy about showing her off. Just last week, Ross posted a photo of his baby girl adorably smiling right into the camera as he held her in his arms.
And this past Mother's Day, Simpson melted our hearts with a pic of her 7-year-old son, Bronx Mowgli, whom she shares with ex-husband Pete Wentz, holding his half-sister, both clad in matching black attire.
Simpson and Ross, 27, are clearly madly in love with both their daughter and each other. On July 29, one day before Jagger's first birthday, the "Pieces of Me" singer penned a sweet message to her husband alongside a snap of them sharing a kiss.
"Love of my life," she wrote, adding a green heart emoji. "So excited to celebrate our baby girl's 1st birthday tomorrow."
Last September, Ross opened up to ET about how much his daughter had already changed him.
"I've been wrong a long majority of my life," he said about what he's learned since tying the knot with Simpson. "The biggest thing in this world is love. I'm so in love. I love my daughter. I love my wife. She's given me the best gift in the world. I'm very lucky."