“If U Seek Amy” by Britney Spears spends its 10th week in So Casual 100™ this week.

So Casual 100™: #99(-3) If U Seek Amy, Britney Spears [10 weeks]. *peak: #2*

“If U Seek Amy” by Britney Spears reenters So Casual 100™ at #96.

So Casual 100™: #96(re) If U Seek Amy, Britney Spears [9 weeks]. *peak: #2*

“If U Seek Amy” by Britney Spears reenters So Casual 100™ at #64.

So Casual 100™: #64(re) If U Seek Amy, Britney Spears [8 weeks]. *peak: #2*

“If U Seek Amy” by Britney Spears reenters So Casual 100™ at #95.

So Casual 100™: #95(re) If U Seek Amy, Britney Spears [7 weeks]. *peak: #2*

Tracks from ‘Circus (Deluxe Version)’ by Britney Spears rise in So Casual 100™ this week.

#9 (+80): Womanizer #91 (RE): Circus #92 (NEW): Out from Under #93 (NEW): Kill the Lights #94 (NEW): Shattered Glass #95 (RE): If U Seek Amy #96 (NEW): Unusual You #97 (NEW): Blur #98 (NEW): Mmm Papi #99 (NEW): Mannequin #100 (NEW): Lace and Leather

“If U Seek Amy” by Britney Spears reenters So Casual 100™ at #86.

So Casual 100™: #86(re) If U Seek Amy, Britney Spears [6 weeks]. *peak: #2*

“If U Seek Amy” by Britney Spears reenters So Casual 100™ at #95.

So Casual 100™: #95(re) If U Seek Amy, Britney Spears [5 weeks]. *peak: #2*

“If U Seek Amy” by Britney Spears debuts at #2 in So Casual 100™.

So Casual 100™: #2(re) If U Seek Amy, Britney Spears [1 weeks]. *new peak*