“Safety first #MAXIDREW,” the singer-turned-designer, 36, captioned the images of her daughter donning a bikini while posing next to her scooter.
Last month, the With You hitmaker posted a family photo with husband Eric Johnson and their two children — including nearly 4-year-old son Ace.
Simpson recently said that two children is enough.
“We had an IUD. Nothing’s gonna get in that uterus!” she joked, and went on to say that she’s “not having a third” child.
“They’re too cute!” she gushed of her daughter and son. “We really can’t top that.”