Penelope is an unlikely 21st century baby name success story. Off the Top 1000 for 25 years, Penelope jumped back on in 2001 and has been heading uphill ever since, propelled by the trend for mythological names, Spanish actress Penelope Cruz, and some high-profile celebrity babies.

Vivienne is an elaborated Gallic version of the name Vivian, chosen first by Rosie O'Donnell for her daughter and then catapulted to superstardom when Brad Pitt and Angelina Jolie used it for their twin daughter. An adult namesake is the British designer Vivienne Westwood. Rosie O'Donnell also has a daughter named Vivienne, known as Vivi.

Holland is one of the coolest geographical names, unadorned and elegant, evocative of fine Rembrandt portraits and fields of pink and yellow tulips. It first entered the US Top 1000 for girls in 2014, but fell out of the Top 1000 for boys a century earlier.

This diminutive, similar to Alex or Alexis, has been yo-yoing in popularity since the turn of the 21st century.