In the German Empire, all of the Roman Catholic bishops joined in issuing a pastoral letter attacking modern fashions. Fashions became more restrained in terms of décolletage, while exposure of the leg became more permitted in Western societies, during World War I and remained so for nearly half a century. In 1953, Hollywood film "The French Line" was found objectionable under the strict Hays Code with some of Jane Russell's décolletage gowns being described as "intentionally designed to give a bosom peep-show effect beyond even extreme décolletage". But other actresses defied the then standards. For example, Gina Lollobrigida raised eyebrows with her famous low-cut dress in 1960, and other celebrities, performers and models followed suit, and the public was not far behind. Low-cut styles of various depths are now common in many situations. During a short period in 1964, "topless" dress designs appeared at fashion shows, but those who wore the dresses in public found themselves arrested on indecency charges. Low necklines usually result in increased décolletage. In Western and some other societies, there are differences of opinion as to how much body, and especially breast, exposure is acceptable in public. What is considered the appropriate neckline varies by context, and is open to differences of opinion. In the United States, in two separate incidents in 2007, Southwest Airlines crews asked travelers to modify their clothing, to wear sweaters, or to leave the plane because the crew did not consider the amount of cleavage displayed acceptable. German Chancellor Angela Merkel created controversy when she wore a low-cut evening gown to the opening of the Oslo Opera House in 2008. In the 2010s, fashion which covered more of women's bodies became more popular, including higher or crew-cut necklines.