During the late-1990s and early 2000s, the influence of pop on R&B could be heard in the work of several pop musicians, most notably Jennifer Lopez and the later recordings of *NSYNC and the early recordings of 98 Degrees. *NSYNC's lead singer Justin Timberlake went on to make several solo recordings that showed heavy influences from both R&B and hip hop music. Other pop stars who perform heavily R&B influenced pop music (sometimes referred to as "dirty pop","urban pop", or a modern definition of "hip pop") include Britney Spears, Gwen Stefani, and Pink.

In the United Kingdom, R&B found its way into the UK garage subgenre of 2Step, typified by R&B-style singing accompanied by breakbeat/jungle rhythms. Among the most notable 2Step artists is Craig David, who crossed over to American R&B audiences in the early 2000s.

Present day By the 2000s, the cross-pollination between R&B and hip hop had increased to the point where, in most cases, the only prominent difference between a record being a hip hop record or an R&B record is whether its vocals are rapped or sung. Mainstream modern R&B has a sound more based on rhythm than hip hop soul had, and lacks the hardcore and soulful urban "grinding" feel on which hip-hop soul relied. That rhythmic element descends from new jack swing. R&B began to focus more on solo artists rather than groups as the 2000s progressed. As of 2005, the most prominent R&B artists include Usher, Beyoncé (formerly of Destiny's Child), and Mariah Carey whose music often blurs the line between contemporary R&B and pop.

Soulful R&B continues to be popular, with artists such as Alicia Keys,John Legend, Toni Braxton and American Idol winner Fantasia showcasing classic influences in their work. Some R&B singers have used elements of Caribbean music in their work, especially dancehall and reggaeton.

Quiet storm, while still existent, is no longer a dominant presence on the pop charts, and is generally confined to urban adult contemporary radio. Most of the prominent quiet storm artists, including Babyface and Gerald Levert, began their careers in the 1980s and 1990s, although newer artists such as Kem also record in the quiet storm style. Its influence can still be seen in singles such as Mariah Carey's "We Belong Together".

In addition, several producers have developed specialized styles of song production. Timbaland, for example, became notable for his hip hop and jungle based syncopated productions in the late-1990s, during which time he produced R&B hits for Aaliyah, Ginuwine, and singer/rapper Missy Elliott. By the end of the decade, Timbaland's influences had shifted R&B songs towards a sound that approximated his own, with slightly less of a hip hop feel. Lil' Jon became famous for a style he termed "crunk & B", deriving its influences from the Southern hip hop subclassification of crunk music. Jon gave his main R&B artist, Ciara, the title of "The First Lady of Crunk & B", and Brooke Valentine and Usher have also recorded R&B songs with strong crunk influences.