Beatrix

From the experts:

Beatrix, has a solid history of its own apart from Beatrice, with that final x adding a playful, animated note to the name's imposing history. It has been largely associated with Beatrix (born Helen) Potter, creator of Peter Rabbit, and Beatrix has been Queen of The Nethelands since 1980.

The main character in Quentin Tarantino's movie Kill Bill was Beatrix Kiddo, played by Uma Thurman.

Actress Jodie Sweetin has a daughter called Beatrix, and designer Kate Spade chose it for her daughter Frances's middle name.

Both Bea and Trixie are adorable nicknames,and Beatriz is the Spanish form.