LOS ANGELES — Lindsay Lohan is about to lose a treasure-trove of expensive clothes, heirlooms and accessories — because she hasn’t paid rent on her storage unit, the celebrity gossip Web site TMZ reported yesterday.

Linz owes $16,000 to storage-unit owners, who have initiated legal proceedings to auction her belongings this month, TMZ reported.

Lohan’s wayward dad, Michael Lohan, told The Post an LA-area locker is stuffed with clothes the always-fashionable “Mean Girls” star wore only once.

The actress’ rep, Tej Herring, confirmed Lohan’s rental but said she’s not behind on payments.