Harper’s BAZAAR on Instagram: "Last night at the Chateau Marmont, it-Brit singer @lilyallen stepped into a sophisticated plunging black gown and chic updo in celebration of @chanelofficial’s Coco Crush fine jewelry collection. Here, watch as Bazaar catches up with the artist while she gets ready for the special night which included a surprise performance of songs from her latest album, “West End Girl.” Head to the link in bio for more of how she got ready for the evening. - Videography: @girlmos