Abi Alton's Chi Chi Katie Black Filigree Leaf Pattern Lace & Colour Block Black Jersey Half Sleeve Collared Pleated Skater Dress With Contrast Black Peter Pan Collar & Sheer Lace Sleeves

You can view Abi in pretty & sweet black lace skater dress here.

You can buy Abi's dress here from the Chi Chi website.

For the other girls' outfits on The X Factor please check the The X Factor label.

Item image via Chi Chi.