Lily Allen managed to keep things Safe For Work when she performed at City Rocks in London on Tuesday night while rocking a completely sheer vintage Pauline Trigère tank top. The singer avoided having a Kendall Jenner moment by covering herself up with nude-colored pasties and balanced out the sexy top with high-waisted black trousers. While Lily looked effortless onstage, her behind-the-scenes snaps on Instagram revealed that things didn't go so smoothly backstage as she had to be sewn into her costume. Despite the tricky outfit, Lily joked about her risqué costume after her performance, posting pictures and writing, "With a side of boob, please?"
Source: Getty / Mike Marsland