So, you think you're a better celeb spotter than me?

I've battled Kelly Osbourne, snogged Rhys Ifans and even hung out with Brad Pitt.
Do you reckon you can do better than that? Well now's your chance to prove it...

• Click on Add an iPap to add your celebrity spots to the map
• Use your iPhone or Android phone to add iPaps when you're out and about
• Score points for every celeb you spot, will you be the top celeb spotter
• Register now and start spotting!

I've teamed up with ipap.me for this challenge, check out their FAQs for more info

• This week's top iPappers

• rabbitfoot0
• Shoveller0
• Kath0
• devineggs0
• Catey0
• domtak0
• erino0
• Dashman0
• weesquirt0
• RoxyT0
• lucys0
• CarolinaBambina0
• regis_Tadeu0
• FuzzyDuck0
• acbz0
• starsurf8080
• xjones0
• zoegriffin0
• vitch0
• AzPp0

• All time top iPappers

• Addman2326100
• zoegriffin25100
• sammic15100
• amarsejpal12500
• iPapArtist10800
• JenWilson8500
• BethFellows958500
• WorldsNumberOne7800
• savannah7500
• miccooeee6000
• motherPapper4900
• traveler1234400
• rabbitfoot4200
• camstar94200
• missy-s3900
• Hurricane2803100
• gazzagamer2800
• BenjaminThree2700
• sophbieber2700
• modroman2600

• Most iPapped celebrities

• Justin Bieber25
• Selena Gomez18
• Diegodiego17
• Katy Perry12
• JLS9
• Rihanna9
• Taylor Swift9
• Peter Andre8
• Olly Murs8
• Lady Gaga7
• The Wanted6
• Cheryl Cole5
• One Direction5
• Leona Lewis5
• The Saturdays5
• Mario Lopez5
• Harry Styles5
• Stephen Fry4
• Pixie Lott4
• David Beckham4