Sometimes a kiss is just a kiss, but on other occasions — as when lips meet a painting valued at $2.7 million — a kiss could be a crime. That is why Sam Rindy, 30, a Cambodian-born French artist, will have to appear in court to face charges of criminal damage, Agence France-Presse reported. Ms. Rindy left the imprint of her lipstick on the otherwise immaculate white canvas that is an untitled work by the American artist Cy Twombly at “Blooming,” an exhibition of his works running until Sept. 30 at the Collection Lambert in Avignon, France. Ms. Rindy said she was so overcome by the 9-by-6-foot work that she had to kiss it. “I stepped back,” she said. “I found the painting even more beautiful. The artist left this white for me.” The police were summoned, and Ms. Rindy was arrested as she left the premises. She has a date in court on Aug. 16.