Lindsay Lohan has found out she has a new sister. According to reports, the star’s dad, Michael Lohan, could be the father of a 13-year-old girl, who he conceived while he was still married to Lindsay’s mother. Michael admits he has currently taken a DNA test to confirm whether he has another daughter. He recently recently told OK! magazine he had a relationship in 1995 with another woman. In other news, Lindsay will record a duet with British singer Lily Allen, titled “Wherever You Go”.