KIM Kardashian almost bust out of her bra-top as she joined forces with Queen of Pop Madonna at her new product launch.
The Keeping Up with the Kardashians star is known to have every secret in the book when it comes to hair and beauty.
So it comes as no surprise that the Material Girl invited Kim, 37, to dish on her favourite tips and tricks during a beauty Q&A at the YouTube Space in Los Angeles on Tuesday.
Kim pulled out all the stops for her appearance alongside the 59-year-old singer, wearing a black bra top which struggled to contain her bust.
The star wore a matching skirt and long pinky blonde hair as she shared insider knowledge for the MDNA SKIN event moderated by YouTube sensation Kandee Johnson.