"I always had really long swimmer's arms. The last to totally go is always my thighs and butt, but my old body is there somewhere"

Kirstie Alley is referring to her body shape and how it has altered in time. She is saying that her arms have actually always been long, like a swimmer's, which her thighs and butt are the tail ends of her body to alter. She is indicating that her body has changed gradually, however that her old body is still there someplace. This quote is likely a reflection of her own body image journey and how she has concerned accept her body as it is. It is a suggestion that our bodies change with time, but that our old bodies are still there someplace. It is a reminder to be kind to ourselves and to accept our bodies as they are.