blue #
= weekly pop chart peak
| 1 | Pieces Of Me | 1 | Jul 2004 |  |
| 2 | Shadow | 11 | Oct 2004 | |
| 3 | La La | 20 | Jan 2005 | |
| 4 | Undiscovered | Sep 2005 | |
| 5 | Boyfriend | 17 | Oct 2005 | |
| 6 | L.O.V.E. | 21 | Feb 2006 | |
| 7 | Invisible | 19 | Jul 2006 | |
| 8 | Little Miss Obsessive | May 2008 | |
| Ashlee Simpson with Tom Higgenson |
| 9 | Outta My Head (Ay Ya Ya) | May 2008 | |