Top Traits: The cardinal fire sign is a go-getter, competitive, and often naturally athletic.
What to Watch Out For: Impulsive Aries, ruled by the go-getter planet Mars, often sometimes act first, think later. They'll do well to slow down and cool down before making decisions.
Celeb Kid Born Under This Sign: Khloe Kardashian's daughter True (April 12) and Hoda Kotb's daughter Hope Catherine Kotb (April 16)
Top Traits: The fixed earth sign is stubborn, grounded, and tenacious.
What to Watch Out For: Taurus kiddos struggle even more than than the average L.O. to get out of their comfort zone (they're all about comfort, as Taurus is ruled by the planet of beauty, Venus). It can be tough for them to try something new, whether it's a food or experience. Parents of baby Bulls will do well to encourage them to be more open-minded.
Celeb Kids Born Under This Sign: Meghan Markle and Prince Harry's son Prince Archie (May 6), as well as Kate Middleton and Prince William's kids Prince Louis (April 23) and Princess Charlotte (May 2), Amy Schumer's son Gene (May 5), Kim Kardashian and Kanye West's son Psalm (May 9)
Top Traits: The mutable air sign is friendly, outgoing, and creative.
What to Watch Out For: Ruled by the planet of communication, Mercury, Geminis are quick-witted and highly talkative, but can also suffer from a short attention span. Keeping them focused on a specific task at hand might be their parent's greatest challenge.
Celeb Kids Born Under This Sign: Beyonce and Jay-Z's twins Rumi and Sir (June 13) and Kim Kardashian and Kanye West's daughter North (June 15)
Top Traits: The cardinal water sign is sensitive, compassionate, and loving.
What to Watch Out For: Little Crabs, born under the influence of the emotional moon, have a tendency to retreat into their "shell" in a self-protective way. They'll do well to be taught healthy methods of expressing and working through their emotions.
Celeb Kid Born Under This Sign: Kate Middleton and Prince William's eldest Prince George (July 22)
Top Traits: Fixed fire sign Leo is charismatic, confident, and loyal.
What to Watch Out For: Ruled by the confident, image-conscious sun, little Leos love to lead the way and be the center of attention and can get aggravated when the spotlight isn't on them.
Celeb Kid Born Under This Sign: Michael Buble and wife Luisana's daughter Vida Amber Betty (July 25)
Top Traits: Mutable earth sign Virgo is analytical, perfectionistic, and innately caring.
What to Watch Out For: Little Virgos can be especially worrisome and sometimes anxious. They'll do well to discover intellectual pursuits (like burying their nose in a favorite book, given that their ruling planet is communicator Mercury) that also help them get centered.
Celeb Kid Born Under This Sign: Serena Williams and Alexis Ohanian's daughter Alexis Olympia (September 1)
Top Traits: Cardinal air sign Libra is sociable, artistic, and a natural-born peacemaker.
What to Watch Out For: Little harmony-loving Libras, born under the influence of the love and beauty planet Venus, want to avoid confrontation at all costs, even at the expense of addressing tough emotions. They'll do well to be reminded that it's OK to acknowledge and express how they feel.
Celeb Kids Born Under This Sign: Heidi Montag and Spencer Pratt's son Gunner (October 1), Jenny Mollen and Jason Biggs' son Lazlo (October 2), and Kate Hudson and Danny Fujikawa's daughter Rani Rose (October 2)
Top Traits: Fixed water sign Scorpio is secretive, magnetic, and capable of feeling deeply.
What to Watch Out For: Little Scorpios, ruled by gung-ho Mars and transformative Pluto, are very private—and very protective of their privacy and deepest emotions. Parents will do well to respect their personal space and need to share how they feel their own terms.
Celeb Kids Born Under This Sign: Hilary Duff and Matthew Koma's daughter Banks Violet (October 25), Kate Upton and Justin Verlander's daughter Genevieve (November 7), Rob Kardashian and Blac Chyna's daughter Dream Renée (November 10)
Top Traits: Mutable fire sign Sagittarius is entertaining, outspoken, and born to be a globetrotter.
What to Watch Out For: Bold, direct Sags, ruled by the lucky planet of expansion Jupiter, often blurt out exactly what they're thinking, #nofilter. They'll do well to learn the art of diplomacy.
Celeb Kid Born Under This Sign: Kim Kardashian and Kanye West's son Saint (December 5) and Jana Kramer's son Jace Joseph Caussin (November 29)
Top Traits: The cardinal earth sign is practical, driven to succeed, and disciplined.
What to Watch Out For: Ruled by the taskmaster planet Saturn, Caps might be too serious at times, preferring to stay in and finish their homework than go out and play. Being given permission to take time-outs for fun serves them well.
Celeb Kid Born Under This Sign: Kim Kardashian and Kanye West's daughter Chicago (January 15)
Top Traits: Fixed water sign Aquarius is independent, makes friends easily, loves learning, and has a quirky, offbeat sense of humor.
What to Watch Out For: Toddlers often assert, "I do it myself!" Free-spirited Aquarians, born under the influence of revolutionary Uranus, feel—and will stand their ground— on this, even more than the average kiddo!
Celeb Kids Born Under This Sign: Kylie Jenner's daughter Stormi (February 1) and Andy Cohen's son Benjamin (February 4)
Top Traits: Mutable water sign Pisces is imaginative, artistic, and romantic.
What to Watch Out For: Ruled by Neptune, the planet that clouds rational thought, Pisces are daydreamers and empaths. They often take on the weight of other people's emotions. They will do well to learn coping skills like mindfulness or meditation early on.
Celeb Kids Born Under This Sign: Jessica Simpson and Eric Johnson's daughter Birdie (March 19) and Wizards of Waverly Place star David Henrie and Maria Cahill's daughter Pia (March 19)