Christina Hendricks has denied leaked topless photos are of her.

A series of pictures alleged to be of the Mad Men star have hit the internet, including one which shows a woman's bare breasts.

Christina's representative has admitted her phone was recently hacked into, but denied the risqu shot is of the 36-year-old.

"The rep insists, the one topless picture - purportedly showing the actress' bare ample bosom - is not Christina. It's an impostor," reports TMZ.

Several other shots show the star scantily clad and without make-up. Christina's spokesperson has admitted those images are real, explaining they were stolen from her phone. She had taken them herself and did not expect them to be made public.

The star apparently has no idea how someone managed to get hold of them or who has made them public. She has been in touch with police who are looking into the situation.

Christina isn't the only star battling a photo scandal.

Pictures alleged to be of Olivia Munn have hit the internet, one of which shows a woman with no clothes on.

The images were posted on the world wide web yesterday, with others supposedly depicting a lady in a bikini, various items of lingerie and a top which exposes her cleavage.

According to TMZ the naked picture is "100 per cent fake" although some of the others are real.

"Sources tell TMZ, several of the shots are legit - namely the black bra, the bikini, the v-neck ... all of which Olivia has previously posted on her blog or Twitter. But according to sources, the ones where you can't see her face are 100 per cent fake... including the nude shot," reports the site.