Singer teases her 'monsters' with new stills from clip, which premieres Thursday.By Jocelyn Vena Lady Gaga in her "Telephone" video Photo: twitter.com/ladygaga Lady Gaga is keeping her fans salivating for the Thursday premiere of her "Telephone" music video by releasing a couple more stills from the Jonas Akerlund-directed clip, which happens to feature her pals Beyoncé, who sings on the track, and Semi Precious Weapons. In the photos on her official Web site, Gaga is seen talking on a pay phone with soda can rollers in her hair, much makeup and a heavily studded leather jacket.