Hilary Duff: Book Signing at Glendale Borders!

Hilary Duff keeps it cute as she signs copies of her new book, Elixir, at Borders on Wednesday (December 1) in Glendale, Calif.

The 24-year-old actress and author was spotted going out to lunch with an older mystery man earlier in the week.

Hil recently had her Twitter name changed to @HilaryDuff!

“Yay!I finally got my name!thanks guys for being patient!So much love to everyone for the continued warmth and love all the time. Night night,” she wrote.