"New Rules" is a song by English singer Dua Lipa from her eponymous debut studio album (2017). The track was written by Caroline Ailin, Emily Warren and Ian Kirkpatrick, while production was handled by the latter. It was released to contemporary hit radio in the United Kingdom on 21 July 2017 as the album's sixth single. It impacted the same format in the United States on 22 August 2017.

"New Rules" is a tropical house, EDM and electropop song with a drum and horn instrumentation. In the lyrics, the singer states a list of rules to get over a former boyfriend. It has received positive reviews from music critics, with many of them labelling it as a break-up and female empowerment anthem. It reached number one in the United Kingdom, the Netherlands, Belgium (Flanders), Ireland, Israel and Romania, while peaking within the top ten in Australia, Canada, Finland, Germany, Italy, New Zealand, Norway, Sweden and several other countries. "New Rules" became the singer's third entry and first top 10 on the US Billboard Hot 100, peaking at number six.

An accompanying music video for the song was directed by Henry Scholfield and premiered through Lipa's YouTube account on 7 July 2017. It shows the artist staying in a hotel room with her friends, who prevent her from getting back together with her former boyfriend. The visual gained the attention of many music critics, who commended its themes of female empowerment. The track's commercial success has been attributed to the popularity of the music video. Lipa has performed "New Rules" at Europa Plus Live in Russia and Glastonbury Festival in England.

"New Rules" was written by Caroline Ailin, Emily Warren and its producer Ian Kirkpatrick during a writing camp for British band Little Mix. Kirkpatrick also engineered and programmed the track, while Chris Gehringer mastered it and Josh Gudwin mixed it. According to Warren, she was told in the early years of her career to never write a song where the male partner will not "get it", but later stopped following that because she thinks the "best writing" happens when she stops worrying about what to do and just expresses herself. She added that she applied this approach with "New Rules", whose lyrics were inspired by Ailin's struggles with the temptation of getting back together with a former boyfriend. The song was passed down by a few artists, including one who thought it did not have a notable hook.

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