"Overrated" is the debut single and the first song taken from Siobhán Donaghy's debut album Revolution In Me and her first away from Sugababes. It was co-written by Donaghy, producer Cameron McVey and Paul Simms. The single reached #19 in the United Kingdom and remains Donaghy's biggest hit single and only top forty hit to date. The single also charted in Australia, Ireland and the Netherlands.

The title of the single, "Overrated", is a play on words on Sugababes' debut single, "Overload."