Ashley Kaufmann: Lindsay Lohan's New Sister (Photos)

Asawaits the results of a DNA test to determine if he is the biological father of 13-year-old, photos of the teen have started to surface.

Ashley's mother, Kristi Kaufmann, says she tried over the years to get Michael to live up to his obligations as a father.

"Many times I offered to do this privately so the other Lohan kids wouldn't be hurt," Kristi told OK!. "But Michael would not live up to his obligations."

Lohan began seeing Kristi during a separation from wife Dina Lohan in 1994. Kaufmann claims "We were in love," although the affair only lasted 4 weeks.

A few weeks after Lohan dropped her, Kristi discovered she was pregnant and tracked him down and told him about the baby, and then he disappeared. Over the years she tried to get in touch with him and finally received a phone call while he was in jail where Kristi says Michael finally admitted, "I always knew she was mine."

Although Michael has written several letters to Ashley over the years, the two have never met.

Lindsay Lohan is said to be taking the news that she may have a half sister very hard, and Michael Lohan has threatened to sue Kaufmann if it turns out he is not Ashley's biological father.

I haven't seen photos of her mother, but Ashley certainly looks like she could have come from the Lohan gene pool.

One more photo below.