An attractive and unusual name that may be a variation of Cleo, Clea was possibly invented by Lawrence Durrell for a character in his Alexandria Quartet.

Adeline in all its forms, including Adelyn, is rocketing up the list, but we do prefer the original to the variations. Or you might consider varying it yet further to Adelia, Adele, or Adelaide. Or lengthen it to Madeline/Madelyn.

When actress Susan Ker Weld changed her name to Tuesday, she opened up a whole calendar of possibilities. This was decades before the arrival of Sunday Rose Urban and years before Wednesday Addams made midweek a possibility.

Acker is a surname name that has not seen much use to date, but given it's lush nature meaning (and the fact that it also means "friend" in Somerset slang) this could be a cute choice for parents looking for something fresh. An added bonus its link to English "Master of the Clarinet" Acker Bilk. The Dutch version, Akker, is also an option.

In early, pre-Norman Ireland, this name was borne by both a sister and a niece of high king Brian Boru. Now, the English form Orla is more commonly used.

Jessamy and big sister Jessamine are all but unknown in the U.S., but make distinctive alternatives to overexposed Jessica, Jessie, and Jasmine.

Unlike most creative spellings, this one isn't overly trendy or overdone—in fact, it's quite delicate and pretty. However, it is clearly suffering from the plethora of similar names that are flowing around right now (Emelie, Emilia, Emily, Emilee, Amelie, Amelia) and has fallen more than 300 spots since 2013. It might be time for Emilie and her sisters to be left alone for a while.

Fashion designer surname that could make a dynamic first.

This more elaborate but not unfamiliar spelling of Riley feels oddly more feminine. Designer and Beatle daughter Stella McCartney has a daughter named Reilley. Still, Reilly or more common Riley is one name that's remained popular for both boys and girls.