"Don't Worry" is the debut solo single of English musician Kim Appleby from her self-titled debut solo album (1990). This was Appleby's first solo-single after the death of her sister Mel. The song addresses the process of getting over being heartbroken. With the aid of her then boyfriend, ex-Bros bassist Craig Logan, Kim launched a solo career with much of her debut solo album composed of songs co-written with Mel, for what was intended to be the next Mel and Kim album. The new album showed Appleby in a more prominent, soulful role, although the tongue-in-cheek humour of Mel & Kim still remained.