Lindsay Lohan and her father, Michael, are often at odds in the press. Now they're at odds legally, with Lindsay's lawyer sending Michael a cease-and-desist letter ordering him not to sell her personal property, according toRadarOnline.com.

In a letter delivered from LiLo's attorney Shawn Chapman Holley to Michael's lawyer Lisa Bloom, the starlet calls her father's actions shameful and appalling.

The spat seems to center around Michael's sale of Lindsay's handwritten diary entries from her time in rehab in 2007. Lohan writes she had no idea her father possessed the diary and gave him no permission to sell or distribute the material. The letter is dated Aug. 23 -- one day before Lindsay was
released from rehab last week.