Radio Top 20 (Updated 21 June) Courtesy CDUniverse

Here's a sneak peek of Katy's new video for her hit single "California Gurls"!

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Check out and see who's making the hits in this week's Radio Top 20.

1.	California Gurls Katy Perry Featuring Snoop Dogg From the album: California Gurls (feat. Snoop Dogg)
2.	OMG Usher Featuring will.i.am From the album: Raymond V. Raymond
3.	Airplanes B.o.B Featuring Hayley Williams From the album: B.O.B Presents: The Adventures Of Bobby Ray
4.	Billionaire Travie McCoy Featuring Bruno Mars From the album: Lazarus
5.	Alejandro Lady Gaga From the album: Fame Monster
6.	Your Love Is My Drug Ke$Ha From the album: Animal
7.	Break Your Heart Taio Cruz Featuring Ludacris From the album: Rokstarr
8.	Not Afraid Eminem From the album: Recovery
9.	Rock That Body Black Eyed Peas From the album: E.N.D. (Energy Never Dies)
10.	Find Your Love Drake From the album: Thank Me Later
11.	Nothin' On You B.o.B Featuring Bruno Mars From the album: B.O.B Presents: The Adventures Of Bobby Ray
12.	Hey, Soul Sister Train From the album: Save Me, San Francisco
13.	Bulletproof La Roux From the album: La Roux
14.	Cooler Than Me Mike Posner From the album: Cooler Than Me
15.	Need You Now Lady Antebellum From the album: Need You Now
16.	Young Forever Jay-Z + Mr. Hudson From the album: Blueprint 3
17.	Breakeven 3oh!3 From the album: Streets Of Gold Pre-Order Now! Available: Tuesday, June 29, 2010
18.	Rude Boy Rihanna From the album: Rated R
20.	In My Head Jason Derulo From the album: Jason Derulo
20.	Ridin' Solo Jason Derulo From the album: Jason Derulo