I Kissed A Girl- #1
Hot N Cold- #3 Waking Up In Vegas- #9
California Gurls- #1
Teenage Dream- #1
Firework- #1 E.T.- #1 Last Friday Night- #1
The One That Got Away- #3 Part Of Me- #1
Wide Awake- #2
Roar- #1
Dark Horse- #1
Most forgotten Katy hits:
1. Waking Up In Vegas
2. Part Of Me
3. The One That Got Away
Now: Rihanna
Pon de Replay- #2
SOS- #1
Unfaithful- #6
Break It Off- #9
Umbrella- #1
Hate That I Love You- #7
Don't Stop The Music- #3
Take A Bow- #1
Disturbia- #1
Russian Roulette- #9
Hard- #8
Rude Boy- #1
Only Girl- #1
What's My Name- #1
S&M- #1
Cheers- #7
We Found Love- #1
Where Have You Been- #5
Diamonds- #1
Stay- #3
FourFiveSeconds- #4
Live Your Life- #1
Run This Town- #2
Love The Way You Lie- #1
Take Care- #7
The Monster- #1
Pon de Replay- #2
SOS- #1
Unfaithful- #6 Break It Off- #9
Umbrella- #1 Hate That I Love You- #7
Don't Stop The Music- #3
Take A Bow- #1
Disturbia- #1 Russian Roulette- #9
Hard- #8
Rude Boy- #1
Only Girl- #1
What's My Name- #1
S&M- #1 Cheers- #7
We Found Love- #1 Where Have You Been- #5
Diamonds- #1
Stay- #3
FourFiveSeconds- #4 Live Your Life- #1
Run This Town- #2
Love The Way You Lie- #1
Take Care- #7 The Monster- #1
Hate That I Love You came to mind before even looking at that list. It just had to get shoved between the global smashes Umbrella & Don't Stop the Music, so no one really thinks of it anymore. Plus, it's probably one of her most dated singles
Break It Off is probably the most forgotten though. I actually forgot it went top 10 Cheers is up there too, but it's kinda a bar classic at this point
Pon de Replay- #2
SOS- #1 Unfaithful- #6 Break It Off- #9
Umbrella- #1 Hate That I Love You- #7
Don't Stop The Music- #3
Take A Bow- #1
Disturbia- #1 Russian Roulette- #9 Hard- #8
Rude Boy- #1
Only Girl- #1
What's My Name- #1
S&M- #1 Cheers- #7
We Found Love- #1 Where Have You Been- #5
Diamonds- #1
Stay- #3
FourFiveSeconds- #4
Live Your Life- #1
Run This Town- #2
Love The Way You Lie- #1 Take Care- #7 The Monster- #1
Now: Rihanna
Pon de Replay- #2
SOS- #1 Unfaithful- #6
Break It Off- #9
Umbrella- #1 Hate That I Love You- #7
Don't Stop The Music- #3 Take A Bow- #1
Disturbia- #1 Russian Roulette- #9
Hard- #8
Rude Boy- #1
Only Girl- #1 What's My Name- #1
S&M- #1 Cheers- #7
We Found Love- #1 Where Have You Been- #5
Diamonds- #1
Stay- #3 FourFiveSeconds- #4
Live Your Life- #1 Run This Town- #2 Love The Way You Lie- #1
Take Care- #7
The Monster- #1
Cheers is up there too, but it's kinda a bar classic at this point 
