Jacquie O Katie HolmesJacquie O Katie HolmesYesterday Katie Holmes toted a copy of Jackie Kennedy's One Special Summer on her way into a meeting at her director's house in Los Angeles.

The book, written about Jackie and and her sister Lee's trip to Europe as young women, was written in 1951 as a sort of "scrapbook" for their mother. Jackie was just 22 when she took the trip -- I guess we can expect to see the 31-year-old Katie shedding 10 years to play the American icon as a young woman abroad!

Very serious about her upcoming role as the former first lady, Katie seems intent on researching every aspect of the lake Jaqueline Kennedy Onassis' life. And it looks as if she impressed the director with her seriousness as well -- just check out the smile on her face as she left:

Jacquie O Katie Holmes

The eight hour mini-series (in which Katie will no doubt age up several decades as well) premieres on the History Channel next year.