Ex-model Jerry Hall, who was once Mick Jagger's longtime girlfriend, says she's ready for a change and putting up 14 art pieces for sale. (Matt Jelonek/Getty)

Ex-model and former Mrs. Mick Jagger Jerry Hall is putting 14 contemporary works up for sale including pieces by Andy Warhol and Lucien Freud.

Sotheby's in London says the works could fetch more than £1.5 million ($2.4 million Cdn).

"At a certain age you just want to get rid of things," said the 54-year-old Texas native, who has found a new career in the theatre and is in Australia appearing in the stage version of The Graduate.

"It's good to be in the moment and change [and] I'm not afraid of change," she told BBC News.

One of the more notable works is a nude of Hall, eight months pregnant, created by Lucian Freud in 1997.

Eight Months Gone is expected to fetch more than £300,000 ($478,400 Cdn).

"It's a wonderful painting," said Oliver Barker of Sotheby's. "It's a very tender, loving painting."

Another is Dollar Sign, a gift to her from Andy Warhol. Two other portraits of Hall, a 1997 work by Francesco Clemente and a 2003 piece by Edward Ruscha, will also go on the block.

Barker said collectively, the works are "a very personal and unique insight" into Hall's life.

"Together they narrate Miss Hall's outstanding story," said Barker, the auction house's senior international specialist in contemporary art.

The auction in London will take place Oct. 15 and 16.

With files from The Associated Press