ZURICH, Switzerland - In February 2014 Wheels24 reported that Sauber signed-up Simone de Silvestro. Silvestro is set to make her debut as a test driver at the end of April 2014. In April 2014, the 25-year-old driver, best known for her Indycar exploits, became "affiliated" with Ferrari-powered Sauber.It emerged that she underwent a seat fitting at Sauber's Hinwil factory in Zurich, Switzerland, and she will make her test debut at the end of April 2014, reports Sauber.NEW RECRUITAnother test driver, teenager Sergey Sirotkin, tested for Sauber in Bahrain.It is believed Sauber prioritised the test for Sirotkin so that he can obtain his mandatory super license and take part in free practice at the Sochi GP in Russia on October 12 2014.The 18-year-old managed the necessary 300km at a competitive pace.Sirotkin said: "My shoes were too small and it was painful when I was braking. When we changed the shoes it was still not the best and and it was difficult to drive. It was not easy but I am glad we completed the 300km."Other notable female personalties in F1:Sauber team principal Monisha KaltenbornSusie WolffMaria de VillotaStay with Wheels24 for the 2014 F1 season – fresh reports every day.