Otto is cool again. Long a quintessential Old Man Name, Otto has been promoted to trending darling of adventurous baby namers.

Ada is one of the classic baby names for girls that is suddenly super stylish again. A favorite at the end of the nineteenth century, Ada is an alternative to the over-popular Ava. Ada is also part of the trend toward simple, old-fashioned names beginning with a vowel, like Ivy and Ella.

Hannah is one of the nation's top biblical girls' names — it surpassed Sarah in 1998, and ranks in the Top 100 along with Elizabeth, Abigail, Chloe, and Naomi. Hannah is a name with many sources of appeal: Old Testament roots, soft and gentle sound, and a homey yet aristocratic image.

A short but strong biblical name with multicultural appeal, Asa is enjoying new visibility thanks to hot young actor Asa Butterfield of Hugo fame.

Anna has become the dominant form of the Ann family, offering a touch of the international to English speakers and a bit more style than the oversimplified Ann or Anne.

Eve, the oldest name in the Book, is now coming back into style, having the virtues of simplicity and purity, yet with more strength and resonance than other single-syllable names like Ann. British actor Clive Owen chose Eve for his daughter, as did Jessica Capshaw.

Combine the charming heroine of the movie Legally Blonde with supermodel Elle Macpherson and the trend toward all names beginning with "el"—Ellie, Ella, Eleanor—and you have one hit name.

The original Pip was the main character in Great Expectations (full name Philip Pirrip). Cute for a tike, maybe too cute for an adult.

Aviva is vivacious and memorable, a fresh spin on the Vivian and Vivienne names that have been getting more popular since Angelina and Brad chose one for their twin daughter. Another A-beginning palindrome name: Aziza.

An anagram of Mama, in tune with its Tamil meaning.

Kids love Bob the Builder, but do they want to be Bob the Builder? Bob and Bobby have been out of style since the 1960s, but as vintage nickname-names -- Fred, Archie -- come back into vogue, Bob may tag along. Charlie Sheen used it for one of his twin sons.

Aziza is a zippy palindromic choice that is the female variation of Aziz and is found in several Middle Eastern and African languages and cultures. All in all, an attractive and interesting option; a Turkish variation is Azize. In African mythology, the Azizi are a supernatural race of forest dwellers who give practical and spiritual advice.

Name of the Roman goddess of harvest and grain, appropriate for a fall baby. And a palindrome too!

This pretty palindrome name is rarely heard in the US, but could make an interesting namesake for an aunt or grandma Ann. It's also a German diminutive form of Anna.

Confident and compact, Ana is a widely used variation of the Biblical Hannah. Favored in Spain, Slovenia, Bosnia, Portugal, and Croatia, this shorter spelling has the same substance and versatility of its longer counterparts.

Introduced by model Emme (born Melissa) and now a legitimate member of the Em-starting girls' name group, especially since it was chosen by Jennifer Lopez and Marc Anthony for their twin daughter.

A short form of Alexandra and Alice used everywhere from Russia to Spain. A fresh alternative to Allie.

Aza is an excellent Arabic choice: elegant and simple. Too simple for you? Consider Aziza.

Alula, the palindromic name of the first double star to be identified as physically related to its twin, would make the perfect name for a first-born twin. Ideas (we're only half joking) for the second born: Aviva, Aziza, Otto. Alula is reminiscent of the unusual name chosen by Isla Fisher and Sacha Baron Cohen for their second daughter: Elula, a month name from the Hebrew calendar.

Aza's similarity to the biblical name Asa makes it ripe for adaptation. If you want something more elaborate, you might consider Azariah. Something simpler? It doesn't get much simpler and that is the beauty of Aza (or Asa).