It's been nearly a decade since Ashley and Lucas graduated from East High and they've reunited to bring us all the way back to day one with their song choice for the episode.
Summer is on the way and that means holidays and beaches and of course, swimwear!
The former Disney star, 31, displayed her enviably leggy and slender figure in the backless swimsuit, layered beneath thigh-skimming denim shorts, as she headed home from their girly afternoon.
Standing out from the crowd with its bold leopard print, the garment was then made even sexier by its plunging back - revealing plenty of her smooth, sun-kissed skin to all.
"It was really crazy just thinking about what would be the best song to sing with you. I started learning it on the piano and I was just instantly taken back to, like, how many times have we sang this song?
In the studio, shooting it, and going around the world?
In the photo, Ashley is wearing a white T-shirt printed with 'Gucci', black jeans and black boots.