Riley—an upbeat, friendly surname name—is red hot for girls and still going strong for boys. If you haven't been spending much time around babies recently, you may be surprised to learn that Riley is the most popular girls' name starting with R and also the Number 1 Irish name for girls in the US.

Quinn is one of the most popular Irish unisex surnames out there, a strong and attractive choice on the rise for girls but still popular for boys. A recent year saw it used for nearly 2690 girls along with 615 boys in the US, meaning its split 80:20 across the sexes.

The new Maia, the next Kayla, Kaia has been on the charts since the year 2000. You might see it as a female form of the also-rising Kai, which means sea in Hawaiian and is sometimes used for girls as well, or as a Kardashianization of the ancient goddess name Caia.

A growing number of high-profile (and other) parents are choosing to honor their musical idols, such as Hendrix, Presley, Jagger, and now Lennon, an Irish name for girls as well as boys with a wonderful meaning on many levels. Lennon first came to notice when Liam Gallagher and Patsy Kensit used it for their son in 1999, and singer-musician Adam Pascal followed their lead two years later.

Nickname name Lainey has been rising since the turn of the century to become a Top 200 girls' name in the US today.

This endearing nickname name is one Katherine pet form that predates all the Kathys and Katies, having been fairly common in the eighteenth century. With the current mini-craze for animal-related names, Kitty is sounding cute and cuddly again—she's already jumped back onto the U.K. list, at number 199.

Popular pop name, inspired by Australian singer Kylie Minogue. It was at its height in Australia in the 1970s and early 80s; often cited as a Noongar name meaning "boomerang".

While theoretically unisex, this surname name has been edging up the girls’ names list, perhaps originally as an Ashley substitute. One quality in Ainsley's favor: It's remained steadily popular -- but not TOO popular -- for more than 20 years now, ranking consistently around Number 400. That makes it stylish and familiar without showing up everywhere.

Ashley was a sensation in the 1980s and 1990s; it hit Number 1 in 1991. Ashley is still pretty but more and more parents are turning to newer names like Ashlyn and Aubrey, and spellings such as Ashleigh and Ashlea. If you hear the name Ashley in a playground today, it's more likely to be the mom than the little girl.

For a name related to a Scottish town, a patterned Indian fabric, and a country singer named Brad, Paisley has seen remarkable success. After appearing, seemingly out of nowhere, it is now an American favorite.

Kimberly's heyday was in the 1960s and 70s, when it ranked among the Top 10. While it hasn't been stylish for decades, it's evidenced more staying power than some former hot girl names, remaining among the Top 300 girl names in the US, where it's stood for 70 years.

A widely used name, Kaylee pulls together something from Kayla and something from Hailey, yet somehow loses something in the process. It has surpassed cousin Kayla on the charts and is one of three girls' names starting with Kthat ranks in the US Top 100.

This was Irish name was once used exclusively for boys, and remains so in England and Wales where it's a Top 50 choice. In the US, however, celebs Jason Sehorn, Angie Harmon, and Lisa Marie Presley inspired many parents to consider this name for girls instead, after they chose it for their daughters. In fact, up until 2024, it ranked considerably higher for girls than it did for boys.

A huge name in the late 90's and most of the 00's, Kaitlyn's been on a downward trend in recent years. Kaitlyn and its soundalikes have been so well used in the US that they can no longer be seen as fresh, but it's still relatively popular in Canada.

Originally an English surname, borrowed from the place name, Kendale, Kendall was given almost exclusively to boys until the 40s when it began to be used for a small number of girls each year. By the 80s, it was a gender-neutral choice, however, since the 1993 appearance of the character Kendall Hart in the soap opera All My Children, it has been leaning feminine.

A surnamier take on Isla. Isley may be derived from the German occupational surname Eisele (of the same pronunciation), or be related to the Old English word hesli, meaning "hazel grove." The Eisley spelling is about twice as popular, but both versions together are given to about 200 baby girls in the US each year.

With its surname-style, literary feel, and similarity in sound to Finley, Juniper, Pippa, Riley, and Presley, Ripley is an unexpected choice that was given to more than 200 girls in each recent year. First used back in the 80s, thanks to the powerful character played by Sigourney Weaver in the Alien films, it began to be used more substantially in the 2000s, after it was chosen by actress Thandiwe Newton for her daughter.

Brinley was a surprise entrant to the US Top 1000 in 2009, however, in 2023, it doesn't feel surprising at all. In fact, alternative spellings Brynleigh and Brynlee also rank in the Top 1000, with Brynley not too far behind.

Take away the Mac and what do you have? Rather than "son of Kenneth," the meaning becomes simply Kenneth, which in itself means son of fire or handsome.

Jackie Kennedy gave this name a lot of style, but it doesn't seem destined for a comeback the way brother name Jack has. Jackie and Jacqueline both peaked in 1961.