While the 40-year-old actress is not believed to be naked in the images, they are thought to be of a personal nature, and the Modern Family star is said to be working with her management and legal team to prevent the shots from being made public.
It is thought that the pictures were taken from Sofia's beau Nick Loeb's phone prior to the pair's engagement in July, and have now been put up for sale by somebody in Delray Beach, Florida.
Drama: Sofia Vergara is reportedly fighting to stop the publication of 'personal' photographs of her taken from fiancé Nick Loeb's mobile phone
'But her management team are doing their best to make sure they do not become public.'
The newspaper also claimed that Loeb had told friends that his BlackBerry had been stolen, explaining how the photos were originally obtained.
Putting on a brave face: Sofia didn't let the situation get to her as she attended the previewof Domingo Zapata's collection in New York on Thursday night
Famous friends: Sofia posed up with Zapata on the red carpet outside the event
Sofia has yet to comment publicly on the claims, but put the drama behind her to attend the preview of artist Domingo Zapata's collection at the Bowery Hotel in New York on Thursday night.
Former financial executive Loeb is also believed to be with Sofia in Manhattan.
'Personal nature': Sofia, seen here with a friend, is world-famous for her stunning figure
World-famous beauty: Sofia's management and legal team are working hard to stop the publication of the shots, believed to have been taken in a bathroom or bedroomSofia, who has a 20-year-old son, Manolo, from a previous marriage, started dating Loeb in 2010.
Their relationship was off and on until last July when Loeb proposed and presented her with a stunning diamond engagement ring.
MailOnline has contacted Sofia's representatives for comment.