Check out a picture of Cheryl inside her birthday party last night with DJ Masterstepz and Fergie from the Black Eyed Peas. Another picture of Cheryl cutting her giant cake was posted by supersonicpr and apl.de.ap from The Peas can also be seen in the photo. Looks like Cheryl had a blast! will.i.am, Kimberley Walsh, Nicola Roberts and Tulisa Contostavlos were among many guests who attended the party. Click above to view images in the gallery.