There must be something in the water, because there’s been a noticeable baby boom in Hollywood!

From Carrie Underwood and Mike Fisher’s firstborn child, to Alicia Keys and Swizz Beatz’s second son, to Ryan Reynolds and Blake Lively‘s daughter, we can’t help but notice all the new babies arriving into Tinseltown in recent weeks.

Let’s take a look at 10 new arrivals in Hollywood…

• Cy & Bowie Perego:

It was double the congratulations to Zoe Saldana and Marco Perego.

“Our boys Cy and Bowie are finally here. Marco and I wanted to thank you for your beautiful wishes and for your patience,” the Guardians of the Galaxy actress Tweeted. “Happy #2015! Starting our New Year with a full house.”

The twins arrived on Nov. 27, 2014, but Saldana announced their birth in early 2015.

• James (?) Reynolds:

In the last week of December 2014, Ryan Reynolds and Blake Lively welcomed their first child – a daughter rumored to be named James.

The Gossip Girl star, 27, and the Green Lantern actor, 38, welcomed their first child, Page Six was first to report.

The private couple – who tied the knot in a secret ceremony in Sept. 2011 – welcomed their baby girl in New York. They’ve remained mum on all other information regarding their daughter.

• Genesis Ali Dean:

It was another boy for Alicia Keys and Swizz Beatz.

The Grammy Award-winning singer, 33, and her record producer husband, 36, welcomed their second child – a son named Genesis Ali Dean – on Dec. 27, the singer announced via Instagram.

Posting a picture of her newborn’s footprints and name, the Girl of Fire singer announced that her son arrived at 1:52 a.m., and he weighed in at 6 pounds, 5 ounces.

“The joy of joy is joy!! It’s a boy!! we are so grateful!! #blessings!!,” she captioned the photo.

The couple are also parents to 4-year-old son Egypt Daoud.

• Brooklyn Elisabeth Lachey:

It was a girl this time around for Nick Lachey and Vanessa Lachey.

The 98 Degrees singer, 41, and the Dads actress, 34, welcomed their second child – daughter Brooklyn Elisabeth Lachey – on Jan. 5, she announced on her website.

Baby Brooklyn — who was born at 5:17 p.m., weighing 7 lbs., 15 oz. and measured 21 inches in length — joins big brother Camden, 2.

“I have been dreaming of this moment for as long as I can remember, the day I was going to meet my little girl. A friend recently told me how magical today was going to be because it’s the day I would meet my best friend,” Vanessa wrote.

She added: “I can’t even begin to tell you how it felt to hold her in my arms for the very first time. Mommy, Daddy and big brother Cam love you so much already, Brooklyn!”

• Vivienne Margaret MacArthur:

It was a girl for Ali Larter and Hayes MacArthur.

The Legends actress, 38, and her writer-comedian husband, 37, welcomed their second child – daughter Vivienne Margaret – on Jan. 15, the actress announced on her website.

“We couldn’t be more excited to share news of the arrival of Vivienne Margaret MacArthur,” the Heroes alum wrote alongside a photo of her precious newborn.

She added: “She came bearing gifts for her brother: Batman sheets and lots of gummy bears!!! 7.5 lbs. of love.”

Vivienne joins big brother, Theodore, 4.

• Sasha Piqué Mebarak:

Congratulations are in order for Shakira and Gerard Piqué.

The Grammy Award-winning singer, 37, and the football star, 27, welcomed their second child – a son named Sasha Piqué Mebarak – on Jan. 29, she announced on her website.

Joining 2-year-old big brother Milan, the couple’s baby boy was born at 9:54 p.m. in Barcelona, Spain.

“The name Sasha is of Greek and Russian descent and means ‘defender of mankind’ and ‘warrior,’” the birth announcement reads. “The hospital confirmed that both mother and child are in excellent health.”

• Sailor Gene Gardner:

It was another boy for Liv Tyler.

The Leftovers actress, 37, and her boyfriend, sports manager/agent David Gardner, welcomed their baby boy on Feb. 11. “He’s healthy and everyone is very happy,” her rep said at the time, remaining mum on the moniker.

Then on Feb. 20, the newborn’s nautical name was revealed with a photo of Liv’s sweet tot holding a blue stone necklace featuring a diamond encrusted anchor.

The Armageddon star captioned the image: “Sailor Gene Gardner.”

Sailor is the actress’ second son — she welcomed Milo in Dec. 2004 with ex-husband Royston Langdon.

Gardner is also dad to 7-year-old son Gray from his previous marriage.

• Lachlyn Hope Gosselaar:

Congratulations to Mark-Paul Gosselaar and Catriona McGinn.

The Saved by the Bell alum, 40, and his wife welcomed their second child – daughter Lachlyn Hope – on Feb. 17, he announced via Twitter.

“So in love with our new baby girl,” the actor Tweeted. “Mum and baby are healthy and happy. 2 boys, 2 girls, too perfect!”

The newborn is Gosselaar’s second child with McGinn. They are also parents to 16-month-old son Dekker Edward.

This is the fourth child for Gossellar. The actor is also dad to son Michael Charles, 10, and daughter Ava Lorenn, 8, from his previous marriage.

• Isaiah Michael Fisher:

Big congratulations to Carrie Underwood and Mike Fisher.

The country music superstar, 31, and her hockey player husband, 34, welcomed their first child – son Isaiah Michael Fisher – on Feb. 27, she announced via Instagram.

“Tiny hands and tiny feet…God has blessed us with an amazing gift! Isaiah Michael Fisher – born on February 27. Welcome to the world, sweet angel!,” the proud new mom captioned the first photo of their newborn’s hand.

• Rhodes Emilio Gilbert Perry:

It was baby No. 3 for Sara Gilbert.

The Talk co-host, 40, and her musician wife Linda Perry, 49, welcomed son Rhodes Emilio Gilbert Perry on Feb. 28.

Baby Rhodes is Gilbert’s first child with Perry. The Roseanne alum is also mom to daughter Sawyer, 7½, and son Levi, 10, from her previous relationship with Allison Adler.

“Our very own Sara and her wife Linda are the proud parents of a new baby boy and both mother and child are doing well,” co-host Julie Chen said on Monday’s show.

Congratulations to all of the new parents in Hollywood! Who has the best – and worst – baby name?