Blonde beauty Sarah Harding has given her opinion on Girls Aloud bandmate Cheryl Cole's huge back and bottom tattoo. 

Cole shocked the world earlier this summer by unveiling a massive rose design that begins on her lower back and covers her entire bottom and Harding has now revealed that it covers something that has been sworn to secrecy. 

She told OK! magazine: "Rosy isn't it? It gives a new meaning to rosy-cheeked!"

When asked by the publication if the 'Call My Name' superstar got it done to hide something else, Harding teased: "Yeah she was (hiding something). I knew what used to be there. Only I knew... and the rest of the girls!"

Harding, who has a variety of tattoos herself, added that she couldn't commit to something as big as Cole's newest addition because sitting for that long to have the ink done would be unbearable: "I don’t think I could do it. Each phoenix took about four hours. I could only do two hours at a time."