(Cover) - EN Showbiz - Kristen Stewart says her biggest fear is people not appreciating her non-Twilight movie parts.

The 20-year-old American actress is best known for her portrayal of Bella Swan in the hugely popular vampire movie franchise, which has been adapted from the best-selling novels of Stephenie Meyer.

The film series - which also stars British hunk Robert Pattinson - is coming to an end, with final instalment The Twilight Saga: Breaking Dawn set for release in two parts this year and next.

Aside from Twilight, which first hit the big screen in 2008, Kristen has appeared in films such as 2009 comedy Adventureland and last years drama The Runaways, a biopic of the eponymous 70s rock band. The talented star says her biggest worry is that her fans wont support her in future projects once the Twilight franchise is over.

If my non-Twilight movies werent accepted, she replied when the German edition of OK! magazine asked what her biggest disappointment would be.

That is something I would hate even more than the fact that I can't go into Starbuck's without being recognised.

Kristen was also asked about her romance with co-star Robert, which has been the subject of speculation recently. The stars met on the Twilight set, and have been dating on and off for some time. It was reported earlier this week the pair have taken a break from their relationship because of work commitments, although no official comments have been made. Kristen doesnt like to discuss her personal life, although she admits she finds it hard to put on a front in showbiz circles.

You won't hear a word from me about that, the actress asserted, insisting she is eager to keep her private life sacred.

Hey, I am 20 years old and just outgrew my teenage years. My problem is that I can't disguise my feelings. I am an actress just in my movies - not on the red carpet, not on parties and surely not in private." (C) Cover Media