Photos: Disney works to keep ‘Frozen’ hot

The success of “Frozen” helped give the toy industry a $531-million boost in 2014, the research firm NPD Group said, which dubbed the brand the biggest and fastest growing toy property of the year. Above, shelves are stocked with “Frozen” merchandise at the Toys R Us in L.A.  (Anne Cusack / Los Angeles Times)

Even sidekick Olaf the snowman makes an appearance on goods, including this toy for sale at Toys R Us.  (Anne Cusack / Los Angeles Times)

Michelle David and her 3-year-old daughter, Siena, look at the “Frozen” merchandise for sale at the Toys R Us in Los Angeles.  (Anne Cusack / Los Angeles Times)

Siena David, 3, reaches toward the “Frozen” merchandise at the Toys R Us.  (Anne Cusack / Los Angeles Times)

“Frozen” was such a hit at Toys R Us that the company expanded its selection from a few dozen products in the beginning of 2014 to more than 300 during the holidays, its merchandising chief says.   (Anne Cusack / Los Angeles Times)