Elizabeth Berkley, best known for her role as Jessie Spano on "Saved by the Bell," is a first-time mother, announcing the birth of a baby boy Monday.

"I am moved to share the birth of our new baby boy Sky Cole Lauren. Thank u for your beautiful wishes and blessings. We r grateful!" the "Showgirls" actress tweeted Monday. "@gdlauren and I thank u from the bottom of our hearts for your good wishes for our baby Sky Cole Lauren :)."

The baby was a birthday gift for Berkley, who turned 40 on Saturday.

Sky Cole Lauren is the first baby for Berkley and husband Greg Lauren, who have been married since November 2003, US Weekly reported. Lauren is an artist and designer.

The magazine published a photo of a very pregnant Berkley and her baby bump in March.

"In life there are moments you cherish forever, and this is one of them," the 40-year-old actress earlier told TMZ.

Berkley and Lauren were gushing about their new son.

"The moment we both saw him it was love at first sight," the couple told People magazine. "We are over the moon and grateful to start this amazing adventure together as a family."

Fans of the "Saved by the Bell" and "Showgirls" actress congratulated Berkley on Twitter.

"@ElizBerkley CONGRATULATIONS!!!!!Many years of Love,Health and Happiness to You, Your Son and Your Family!!!!!" wrote Olga Radlynska.

"@ElizBerkley congrats! beautiful name," said @TR4C33.

A Twitter account for fans of "Saved by the Bell," where Berkley played Bayside High School student Jessie Spano, an environmentalist and feminist, also shared the baby news.

"SAVED BY THE BABY!!! We can finally congratulate @ElizBerkley@gdlauren on the birth of their baby boy Sky Cole Lauren!!!!#babybaysidetiger," tweeted @SBTBNow.

Berkley's baby announcement wasn't the only recent joyous occasion for an alum of "Saved by the Bell."

Mark-Paul Gosselaar, who played the popular troublemaker Zack Morris on the 1990s television show, married advertising executive Catriona McGinn on Saturday.

The marriage is the second for Gosselaar, whose most recent acting credit is for TV series "Franklin & Bash," where he plays lawyer Peter Bash.