William Bouguereau's "Frere et Soeur," an oil painting of a young woman tenderly holding her baby brother, could fetch up to $1.5 million at Sotheby's on Nov. 4.

It was painted in 1887 by the French artist, whose work is enjoying renewed interest. Moore's other painting, "Mere et Ses Enfants" by Belgian painter Alfred Stevens, is estimated to bring up to $200,000. While she loves both paintings, Moore said, "with the renovation and new direction our home is taking, it is time for a change."

The actress acquired the works in 1995 at a Christie's auction, paying $178,500 for "Frere et Soeur" and $200,500 for the Stevens painting. "I find Bouguereau to be particularly engaging for me personally and have chosen to hold on to a smaller piece to carry with me throughout the years," said the star known for her work in such films as "Ghost," "Indecent Proposal" and "A Few Good Men."

Moore, who has appeared nude on the cover of Vanity Fair while pregnant and is married to actor Ashton Kutcher, said she was particularly inspired by Bougeureau's depiction of women «with incredible strength.» Bouguereau was awarded the Prix de Rome in 1850, which enabled him to travel throughout Italy.