[custom_adv] The Princess of Wales visits the Badshahi Mosque on 27 September 1991 wearing a knee length skirt. For most Pakistanis, it was the first time they had seen a woman walk through a grand mosque with her legs uncovered, and some clerics complained that they would have preferred her to wear trousers. [custom_adv] An Egyptian helps former US First Lady Hillary Clinton to put a headscarf on her hair, 21 March before entering the Mohammed Ali mosque in Cairo. [custom_adv] Britain's Queen Elizabeth II and her husband Prince Philip (L) stand with Abu Dhabi Crown Prince Sheikh Mohammed bin Zayed al-Nahayan upon their arrival to visit the Sheikh Zayed Grand Mosque in the Emirati capital. [custom_adv] Then US President Barack Obama with first lady Michelle Obama and Grand Imam Ali Mustafa Yaqub, left, talks to journalists during their visit to the Istiqlal Mosque in Jakarta, Indonesia, in 2010. [custom_adv] Goodwill Ambassador for the United Nations High Commission for Refugees (UNHCR) Angelina Jolie (C) walks with officials at the Kacha Ghari Repatriation Centre outside Peshawar. Oscar-winning US actress Angelina Jolie arrived in Pakistan on a four-day mission to focus the world's attention on the plight of over three million Afghan refugees. [custom_adv] Lindsay Lohan certainly looked the part as she attended London ... holding the Holy Quran last year as well as sporting a headscarf. [custom_adv] The news of the incident, and the publication of the photos, sparked many reactions on Twitter, both negative and positive, many of them posted under the hashtag "Rihanna Defiles the Sheikh Zayed Mosque." Some cursed and threatened the singer, decried her desecration of the mosque and called to investigate the incident and punish whoever allowed her to enter the compound. Others praised her for respecting the site by wearing a hijab, and attacked her critics, pointing out that there are much worse acts that require condemning. The following are several examples: [custom_adv] Kate, the Duchess of Cambridge, prepares to visit a mosque in Kuala Lumpur, Malaysia. Britain's Prince William and his wife Kate were in Malaysia for a three-day visit as part of a tour to mark Queen Elizabeth II's Diamond Jubilee. [custom_adv] Actress Paris Hilton is wearing a headscarf while visiting the UAE. [custom_adv] EU foreign policy chief Federica Mogherini adjusts her headscarf during a press conference with Foreign Minister Mohammad Javad Zarif following their talks in the capital. [custom_adv] Models Kendall Jenner (L) and Gigi Hadid (R) wearing scarves while visiting the UAE.