Lindsay Lohan visited Jay Leno on The Tonight Show to chat about her upcoming film Liz & Dick.

The starlet, sporting deep red hair, also opened up to Jay about her recent headline grabbing issues ... including news that her dad Michael fathered a illegitimate daughter while married to Dina. Linds' advice to her half sister: "Good luck with my dad."

At least Lilo has a good sense of humor.