Names I love, can't use

Boyish nicknames for girls are all the rage — just look at the success of Charlie, Frankie, Stevie, Billie, and Scottie in recent years. Andie has history as a nickname for Andrea, popularized by actress Andie Macdowell.

Charlie is one of the friendly, tomboyish male nickname names--another is Sam-- now used almost as frequently for girls: in 2015, it ranked higher on the girls list than on the boys list for the first time. That makes Charlie one of the most popular unisex names around today. The name Charlie, for females, has been jumping up the charts since it reappeared, after a 50-year hibernation, in 2005.

Clover is a charming, perky choice if you want to move beyond hothouse blooms like Rose and Lily, and it's recently become a new celeb favorite, chosen by both Neal McDonough and Natasha Gregson Wagner, who used it to honor her mother, Natalie Wood, one of whose most iconic films was Inside Daisy Clover.

A diminutive of Daniel that's been immortalized in odes ranging from 'Danny Boy' to 'Danny's Song.'

Felix is one of those ancient but nontraditional names for boys that have come into favor over the past few decades, a favorite of parents who want a masculine name with history and heft that breaks ranks with the standard Franks and Freds. Felix is also an international darling, ranking in the Top 100 in several European and English-speaking countries.

Heidi became known — and popular — via the 1880 eponymous children's classic by Swiss writer Johanna Spyri and, despite decades of American Heidis of all sizes, shapes, and personalities, the name seems permanently tethered to that spunky little girl on the Alpine mountaintop in the book and Shirley Temple movie.

Jamie is typical of the relaxed unisex names starting with J that seemed so cool in the sixties after decades of Jeans and Joans, though now pretty tepid. Jaime and even Jamey and Jayme are alternate spellings.

The cool form of James in the 1970s and '80s for both sexes. Still a more stylish short form than Jimmy, though many parents will want to call James by his entire, not-very-long name.

Noah is nearly a patriarch of popular baby names at this point, going from Old Testament graybeard to Top 10 name in 2009, hitting Number 1 in 2013, and now settled into second place in the US for the past seven years.

Piper is a bright, musical name that entered the list in 1999, one year after the debut of the TV series Charmed, which featured a Piper, and it's been a consistent riser since. Piper Kerman is the memoirist whose prison experiences provided the basis for the hit Netflix series Orange is the New Black.

See the popularity graph below for the name Theo? It's been heading straight uphill since 2010, when it hopped back onto the Top 1000 after a 60+ year absence.

Zoe is one of those surprising names that has been on the Top 1000 nearly every year since 1880, but it's only since the turn of this century that it's ranked in the Top 100.