While Clark focused on her new career in France, she continued to achieve hit records in the UK into the early 1960s, developing her career in parallel on both sides of the Channel. Her 1961 recording of "Sailor" became her first number-one hit in the UK, while such follow-up recordings as "Romeo" and "My Friend the Sea" landed her in the British Top-10 later that year. "Romeo" sold over one million copies globally, and was her first gold disc, which was awarded by the Recording Industry Association of America. In France, "Ya Ya Twist" (a French-language cover of the Lee Dorsey rhythm and blues song "Ya Ya" and the only successful recording of a twist song by a woman) and "Chariot" (the original version of "I Will Follow Him") became smash hits in 1962, while German and Italian versions of her English and French recordings charted, as well. Her recordings of several Serge Gainsbourg songs were also big sellers. In addition, she was given at this time a present of the song "Un Enfant" by Jacques Brel, with whom she toured. Clark is one of only a handful of performers to be given a song by Brel. A live recording of this song charted in Canada.