X Factor 2011: Tulisa Contostavlos investigated by Ofcom over arm gesture

You better start perfecting your wave Tulisa: X Factor judge”s arm gesture investigated due to complaints of illegal promotion

Weekly gesture: X Factor judge Tulisa Contostavlos has become known for showing off her tattoo at the beginning of each live show but she may be banned from doing it in future

Weekly gesture: X Factor judge Tulisa Contostavlos has become known for showing off her tattoo at the beginning of each live show but she may be banned from doing it in future

Just a wave: Following several complaints, Ofcom have begun an investigation into the star

Just a wave: Following several complaints, Ofcom have begun an investigation into the star”s gesture and how it may be illegally promoting her perfume

The Female Boss: Tulisa

The Female Boss: Tulisa”s perfume which she launched last month goes by the same name as what is tattooed on her right arm

Illegal promotion: The N-Dubz star launched her latest endorsement last month but has been criticised for trying to promote it on the X Factor and The Xtra Factor

Illegal promotion: The N-Dubz star launched her latest endorsement last month but has been criticised for trying to promote it on the X Factor and The Xtra Factor