Versions
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Girlfriend (CD, Maxi) | Virgin | 9531923 | Europe | 1998 | |
| Girlfriend (7", Promo) | Innocent | SINLH3 | UK | 1996 | |
| Girlfriend (12", Promo) | Innocent | SINTDJ3 | UK | 1998 | |
| Girlfriend (CD, Enh) | Innocent | sindx3 | US | 1998 | |
| Girlfriend (CD, Maxi, CD1) | Innocent, Virgin | SINCD3, 7243 895319 2 3 | UK | 1998 | |
| Girlfriend (12", Promo) | Innocent | GIRL-001 | UK | 1999 | |
| Girlfriend (12") | Virgin | 7243 8 95319 6 | Italy |