Spears rarely posts photos of her children, with whom she shares with ex-husband Kevin Federline, and she explained why when she last shared a picture of her grown-up sons in March, where she also took a minute to reminisce on how “crazy” time flies.

“I’m extremely lucky because my two babies are such gentleman and so kind that I must  have done something right,” she wrote beneath the fiery sunset edit of their family photo. “I haven’t posted pictures of them for some time cause they’re at the age where they want to express their own identities and I totally get it.”

See Spears in her natural poolside mommy habitat below.