Lohan family is upset as David Letterman in a recent interview referred to Ali Lohan as ‘Lindsay’.

Ali Lohan made an appearance on David Letterman’s Late Show on Tuesday for promoting the new reality show, Living Lohan. During the interview David mistakenly called Ali Lohan as Lindsay, but the joke was well taken by Ali Lohan and she brandished it with a laugh.

But the joke has not gone well down with the Lohan family, as they believe Ali’s association with Lindsay mighty harm her reputation.

A source close to the family says,” It’s a sticky area because Ali’s rising star is both enabled and discredited by her sister’s notoriety. Ali doesn’t want to ride Lindsay’s coattails, and Dina has always believed Ali is a great talent in her own right.

“When he calls her Lindsay, it reminds everyone of how much she emulates her sister’s behavior — she’s basically adopted her voice and look. We can expect it will be hard for Ali to stay out of the tabloids,” added the source.

Only thing that we hope she doesn’t emulate is her sister’s crotch flashing antics.