Penelope Cruz and sister Monica show off their flirty LBDs in new Mango ad campaign

Mail - More than anyone, red carpet regular Penelope Cruz knows the power of the Little Black Dress. Which is why it takes centrestage in the Hollywood beauty's new collection for Mango. Designed with sister Monica, 31, the talented star is known for her acting, but is fast becoming better known for her designing skills. The Hollywood star and her sister Monica appear in their fourth ad campaign for Spanish clothing giant, Mango's Spring/Summer '09 collection showcasing their new limited collection Penélope & Mónica Cruz for MNG.