Anne Hathaway is taking her role as Catwoman in the upcoming Batman installment very seriously -- and is committed to an intense workout schedule in the hopes that she might be the most unforgettable Catwoman yet.

"Anne is working out five days a week. She's taking it very seriously and wants her body in tip-top condition," a source told The Daily Mirror.

"Secretly she hopes to upstage Halle Berry, who last played Catwoman. She's doing dance classes, weight-training and cardio - she wants to be the sexiest Catwoman ever."

Hathaway is currently in Pittsburg filming the much-anticipated "The Dark Knight Rises", which stars Christian Bale in the lead role. Previous Catwomen have been played by Halle Berry and Michelle Pfeiffer.

The Daily Mirror snapped photos of Anna Hathaway this week. The 28-year old actress had slipped out of her catsuit and into a flowing white dress, presumably to film scenes as Catwoman's alter-ego, Selina Kyle.

Do you think Hathaway will out-claw Halle Berry and Michelle Pfeiffer?