LINDSAY LOHAN‘s rumored half-sister, ASHLEY HORN (aka Ashley Kaufmann), is indeed an official Lohan after the estranged 17-year-old took a DNA test on an NBC show recently, according to star news.

One big family!

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Around 8 years after Lindsay Lohan‘s dad, Michael, allegedly had an affair and fathered a child with a woman named Kristi Horn behind his wife Dina‘s back, a simple DNA test has finally proven that young Ashley Horn is indeed the Hollywood actress’ secret sister.

Michael—who is already expecting an illegitimate child for knocking up his ex-girlfriend, Kate Major, this year—was with Kristi and their the brunette 17-year-old on “The Tricia Goddard Show” on Thursday when the host pulled a Maury and revealed the results of his requested paternity test with the words, “you are the father.”

Of course, this revelation makes Lindsay a five-time older sister—including to her three legitimate siblings Michael, Ali and Dakotaand that Michael really did father a child behind Dina Lohan‘s back.

The timing for the it couldn’t be better too—Michael is currently trying to win his three kids back after they’ve declared that they were “done”with their deadbeat father.

At least he has two others to care about him… or not?

See what we mean below:

How do you think Lindsay reacted about this news?

Photos By PR Photos / Video Screen Grab

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