A Manhattan woman who won two Swiss chalets and millions in jewelry and stock in her divorce now refuses to hand over family art to her kids, according to a lawsuit.

Barbara Stewart, the ex-wife of the grandson of a MetLife founder, allegedly won’t let anyone access the East 59th Street apartment where the paintings are kept — and where she lives rent free.

The four original oil paintings, worth approximately $1.6 million, belong to a Stewart Family trust and need to be sold to raise cash, the trust claims in Manhattan Supreme Court papers seeking access to the property.

The family bought the paintings, each from a different artist, for their four kids in 1987. Barbara Stewart could not be reached.

In 2015, Barbara Stewart lost her bid to wring even more assets out of her divorce from William P. Stewart Jr., even though she had previously been awarded the chalets, luxury vehicles, a Bermuda estate, $8 million in jewelry and $4 million in stocks.