AceShowbiz - Upon receiving Lady GaGa's help for "Video Phone" music video, Beyonce Knowles will return the favor by lending her vocal to the dance queen's new song "Telephone". Breaking the news to public is Lady-Gaga.net which claims the information is obtained from an insider in Universal Music Group.

Beyonce and Lady GaGa filmed "Video Phone" earlier this month and kept the video shoot hush-hush. However, a source managed to spill the beans on the wardrobe they were wearing. Beyonce reportedly donned "a feathered dress" and Lady GaGa wore "something wild".

Premiere date for the video is yet to be disclosed. Words are, the song featured in the video will be a remix with the addition of Lady GaGa's vocal.

"Telephone" is one of the new materials appearing in Lady GaGa's "The Fame: Monster" which is due for November 23 U.S. release, while "Video Phone" is one of Beyonce Knowles' singles in her 2008 effort "I Am...Sasha Fierce".