There are 8 signatures total with 2 duplicates and are as follows. Patricia Velásquez Actress / Model (signed both shoes). Tia Carrere Actress / Grammy Award Winner. Dayana Mendoza Miss Universe 2008 (signed both shoes). Aubrey O'Day Pop Star.
These shoes were signed after the airing of The Celebrity Apprentice 5 (also known as The Apprentice 12) Episode 3: How Much is That Celebrity in the Window? This was before Ivanka became very famous and simplified her signature.