Miley Cyrus is currently in the midst of the North American leg of her tour in support of her latest studio album 'Bangerz'.

But even though the tracks are all relatively new, it seems the 21 year-old still manages to forget her own lyrics.

A new photo, taken by a fan, has found its way online and it clearly shows Cyrus using a teleprompter while performing her hit songs.

The snap was from her Las Vegas concert on March 1st.

"I was at Miley's Vegas concert and took these pictures because I couldn't believe she needed a teleprompter with lyrics to all of her songs throughout the entire concert," a concertgoer told RadarOnline.

"And it's not like they were just there for nothing - I caught her looking at them more than a few times," the source added. "The show was entertaining, but she didn't sound great."

Since the 'Bangerz' tour begun it has caused controversy due to Cyrus' proactive actions onstage, exposing most of her body in revealing costumes and kissing a fellow female pop-star.

The 'We Can't Stop' singer shared a smooch with Katy Perry while she was in attendance at her Los Angeles concert, last month (Feb).

Perry finally discussed the PDA moment during an interview with Australia's morning talk-show 'Sunshine,' describing what it was like kissing Cyrus.

"I just walked up to her to give her like a friendly girly kiss, you know, as girls do," Perry explained, adding, "and then she like tried to move her head and go deeper and I pulled away."

"God knows where that tongue has been," she jokingly quipped. "We don't know! That tongue is so infamous!"

This racy moment only occurred only days after it was reported that the 'Bangerz' concert has already garnered a high number of complaints and requests to cancel the rest of the tour as people think she has gone "too far".

"Miley's management have been flooded with complaints, mainly from parents, since her tour began last week in Canada with calls for the entire tour to be axed," a source revealed.

Maybe Miley should concentrate more on remembering her own lyrics!

Miley Cyrus
Cyrus needs help to remember lyrics off her 'Bangerz' album