Costadinos Contostavlos (born June 11, 1987) better known by his stage name of Dappy, is an British singer-songwriter, rapper, actor of Greek descent. He is best known for being the lead singer of the Camden-based Grime/hip hop/R&B trio N-Dubz, with his cousin Tulisa (Tulisa Contostavlos) and their friend Fazer (Richard Rawson). The No Regrets Songfacts states that he reached #1 in the UK with his debut solo single, "No Regrets", which was released on September 18, 2011.

Dappy is known for his slightly unusual dress sense and his love for what he describes as "eye-catching headwear". His trademark is wearing a selection of woolly chullos (sometimes referred to as "Dappy hats"), turning up one of or both the ear-flaps of the hat.

Dappy has said before he would like to work with Maniac. Dappy has also released two mixtapes called D-A-P's to the Y which features artists such as Frisco, Black the Ripper, Chipmunk,Wiley,Cookie G, Double S and Kano. His second mixtape is called Hot off These Steets and features artists such as Scorcher,Ghetts,G Frsh, Wizzy Wow,Wretch 32, Sway,Tempa T and Mercston. These are solo mixtapes and doesn't involve Fazer or Tulisa, even though Fazer also has two mixtapes. Each mixtape has 40 tracks with songs which are 2–4 minutes long.

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