Prosecutors in February charged Lohan with felony grand theft on allegations that she took a $2,500 necklace from a Venice boutique.
The charge was reduced last week by Los Angeles Superior Court Judge Stephanie Sautner, who said that she did not think the case warranted a felony prosecution because many other cases involving more serious allegations are reduced to misdemeanors.
Authorities allege the theft occurred roughly three weeks after Lohan, 24, was released from court-ordered rehab at the Betty Ford Center.
No contest pleas are not an admission of guilt, but a judge could still give Lohan a penalty of some kind.
It is not clear when she will enter the plea.
Lohan is due back in court May 11 for a pretrial hearing, but she reportedly wants to put the case behind her and focus on her career.
The Associated Press contributed to this report.
