The #1 song in the UK on July 21, 1987

Who's That Girl By Madonna

Other #1 songs on July 21, 1987

#1 Hit Song

Alone
Heart

#1 R&B Song

Fake
Alexander O'Neal

#1 Country Song

The Weekend
Steve Wariner

#1 Dance Track

I Wanna Dance with Somebody (Who Loves Me)
Whitney Houston

Notable July 21 birthdays in the 1980s

Rory Culkin

Born July 21, 1989
KB

Born July 21, 1988
Rebecca Ferguson

Born July 21, 1986
Von Wafer

Born July 21, 1985
Kellen Winslow II

Born July 21, 1983
Anabelle Langlois

Born July 21, 1981
Jon Dorenbos

Born July 21, 1980