Celebrations are in order as Jana Pittman has given birth to a baby girl weighing 3.1kg.
The Australian athlete's happy news emerged on Twitter on Tuesday night.
"Congratulations to former PACE clients Sara & Steve Slattery and Jana Pittman on their new arrivals Cali Slattery and Emily Pittman," wrote Jana's former sports agency PACE Sports Management.
The Australian two-time world champion 400-metres hurdler chose to undergo IVF to fulfill her dream of having a daughter.
Though pregnancy wasn't slowing our girl down.
On Tuesday night Fairfax Media also published a video showing Jana running at 8 months pregnant.
She was filmed jogging 200 meter tempo reps with a big, beautiful belly below her purple crop top.
Jana, who made history last year as the first Australian woman to compete in both the Summer and Winter Olympic Games, was training right up until the birth.
She has aspirations of returning to the track for the Rio Olympics in 2016.
Speaking with Womans Day last year, Jana, 32, said she was overjoyed to have a sibling for her son Cornelis, 7, and she conceived with an IVF donor.
“I feel extraordinarily lucky,” she said at the time.
“I can’t wait to meet my baby girl – she’s my little miracle!”
The Weekly has contacted Jana's management for comment.