High hair and high collars for X Factor judges Nicole Scherzinger and Paula Abdul at Dallas auditions

By Daily Mail ReporterClassic: Nicole Scherzinger arrives for the X Factor auditions in Dallas in a demure lace blouse teamed with a flouncy black skirtThey've been battling to outshine each other in the X Factor fashion battle in sexy, colourful frocks.But in a change of pace, both female judges on the American series opted for demure, monochrome outfits at the Dallas auditions yesterday.Nicole