Wow! (stylised in all caps) is the fourth studio album by English group Bananarama, released on 4 September 1987 by London Records. The album was entirely produced and co-written with the Stock Aitken Waterman production trio. Tensions between group member Siobhan Fahey and Stock, Aitken and Waterman regarding songwriting input and lyrical content (particularly with the track "Strike It Rich") prompted Fahey's departure from Bananarama five months after its release.