The actress, 28, and her husband Tom Shaw welcomed a baby boy on New Year's Eve, just hours before 2015 began in a blaze of fireworks and merriment.
In an emotional message to her fans, followers and friends on Twitter, Paula said: "@SirTomShaw Our world is complete - we finished off a momentous year with the arrival of our beautiful baby boy on NYE!!!!"
Pass the tissues!
It is the first child for the couple, who married in May.
One month later, Paula - who played Kylie Platt in the ITV soap - announced they were expecting a baby.
Celebrity pals and soap stars were some of the first to congratulate the new parents.
Emmerdale's Natalie Anderson wrote: "HUGE congratulations to you both Hun!!! Such gorgeous news and a beautiful way to start your year. xxx"
Fellow Corrie star Georgia May Foote posted: "Congratulations to you both!! Cant wait to meet him!! lots of love to you both! X"
And pregnant Catherine Tyldesley, who plays Eva Price, gushed: "Massive congrats guys!!! Lots of love!! I'm cooking him a little pal as we speak ;-) xxx."
@SirTomShaw Our world is complete - we finished off a momentous year with the arrival of our beautiful baby boy on NYE!!!!— Paula_Lane (@lane_paula) January 1, 2015
It's been an eventful few weeks for Paula as her character Kylie was seen leaving the cobbled streets of Weatherfield in a dramatic storyline on Christmas Day.
After the heartbreaking scenes aired, Paula tweeted: "Overwhelming comments tonight about Kylie's exit. Thank you! Love my Corrie family xx."
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Celebrities who welcomed babies in 2014:
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