Britta is the world record holder 100m free. She is in France right now at the Paris Open and in her prelim for the 100m free she swam a 54.58 beating her best competitors by a second-plus.
Now, this was just a prelim and she nearly matched Dara Torres 54.45 swim. Craig Lord of Swim News is calling this swim "easy speed." I can't wait to see what she does in the final. It would e so cool if she matched Libby Lenton's faux world record of 52.99 she clocked against Michael Phelps. [Link]
Here is a profile of her in German. I got her picture from this site as well. It's what she looked like when she broke the world record in Budapest: [Link]