Singer Ashlee Simpson added to the confusion surrounding reports she is pregnant, by refusing to confirm or deny the claims during a live appearance on U.s. TV on Friday.

After Simpson and rocker beau Pete Wentz announced their engagement earlier this month, sources immediately alleged the Boyfriend singer is expecting the couple's first child.

The pair have since made numerous TV appearances and failed to clear up the rumors - even spoofing them by making a video showing Simpson wearing a fake baby bump.

On Simpson's latest TV spot - on American breakfast show Today - she again dodged the question, joking, "That's been going around for about a year now. Only time will tell with that."

"Right now we're just really enjoying the engagement."