Lindsay Lohan Has A Secret 17-Year-Old Half-Sister

After spending years claiming that Lindsay's dad was her biological father, 17-year-old Ashley Horn comes face-to-face with Michael Lohan as DNA results are finally revealed on the daytime talk show Trisha.

This is Lindsay's half-sister, Ashley

The promo:

The big reveal:

tmz.com

Ashley first made her claim back in 2008: