In the videos, Simpson and Birdie matched in yellow-orange, one-piece bathing suits. Simpson seemingly teased the new color of her Scalloped Edge V-Wire One-Piece Under Sea Swimsuit. Meanwhile ...

In a video reel promoting the new pieces on Instagram, the singer and Birdie took their twinning status to the next level, modeling matching creamsicle-colored swimsuits and coordinating cowboy boots.

In addition to Birdie, Simpson also is a mom to daughter Maxwell "Maxi" Drew, 12, and son, Ace Knute, 11, whom she shares with her estranged husband, Eric Johnson. Earlier this month, the former ...