Shortly after, Aegerter played the role of “Laura Moretti” in the film Achtung, fertig, Charlie, which came in second on the list of the most successful Swiss movies ever made (with over 560'000 entries at the box office as of 2011; behind Rolf Lyssy's classic "Schweizermacher" of 1978 with over 940'000 tickets sold).
Aegerter also composed and sang the film's title song, "Hie u Jetzt," which became a hit in Switzerland, reaching the Top 5 of the Swiss single charts.
She received prizes and honors for her work, including the PRIX WALO in 2003, the VIVA COMET in the category of "Best of all CH Act," and the famous SWISS AWARD.
With her debut album, So wie I bi / The way I am, released in 2004, Aegerter proved that she is not only an excellent dialect singer, but very expressive with English lyrics.
After many unplugged gigs in 2004-2005, she and her rock band, were a supporting-act of Ronan Keating's German Tour, which allowed them to perform on the biggest stages in the country.