Your company cannot refuse to hire Laila because she wears a headscarf. She wears a headscarf as a tenet of her religion, and refusing to hire her because she won’t comply with the “look policy” is religious discrimination. Your company must grant her an exception and allow her to wear the headscarf.
In 2015, the US Supreme Court ruled in a similar case. The Equal Opportunity Employment Commission (EEOC) sued Abercrombie & Fitch on behalf of Samantha Elauf, who was denied employment at Abercrombie & Fitch because of headscarf and refusal to comply with the “look policy.” The US Supreme Court ruled that Abercrombie & Fitch was required to make an exception to its “look policy” for religious attire, and it not doing so, it violated the Civil Rights Act of 1964. Abercrombie & Fitch settled for damages over $25,000.