The former O.C. star claims several directors have wanted her to appear naked in their films, but she has remained "strong-willed" and refused to take her clothes off.
"They like to put in nudity wherever they can. But I'm pretty strong-willed and believe it can be avoided," femalefirst.co.uk quoted Bilson as saying.
The 29-year-old actress says it is more awkward to shoot love scenes with a boyfriend than an actor you don't know.
"Doing a love scene with someone that you're involved with is more awkward than doing a love scene with someone you're not dating," she said.
"Either way, it's definitely weird though. It's certainly not normal to kiss a guy in front of 10 other guys and a camera," she added.