But the post was quickly taken down, lending to an air of mystery over its meaning.
Hours after Serena Williams seemed to accidentally post photos of her baby bump on Snapchat, the tennis overlord's publicist has confirmed the impending arrival of her blessed bébé.
Here at Now we're sending HUGE congratulations to Serena and Alexis on this lovely news.
"I've known women who are back to running fast 5Ks in a month because they ran probably up until 36 weeks without much problem", said James Pivarnik, a kinesiology professor at Michigan State University.
Williams, who announced her engagement to the co-founder of community news and chat site Reddit, Alexis Ohanian, in December, is top of the all-time list of major winners since Grand Slams accepted professional players in 1968.
Wiliams photo post is reminiscent to the Instagram announcement made by her friend, music star Beyonce, in February.
The well-wishes poured in after the confirmation, with fellow American Andy Roddick tweeting: "There's going to be a baby GOAT (greatest of all time). Let that sink in", wrote Twitter user @noelleharmony.
Her victory over older sister Venus broke a tie with Steffi Graf for the most Grand Slam singles championships in the sport's modern era.
Australians Evonne Goolagong and Margaret Court also won majors after having children. The star player has yet to play in another game after the Australian Open though, having pulled out of her other two scheduled events (Indian Wells and Miami) due to a left knee injury. That enabled Kerber to retake the top ranking, though Serena is assured a return to No1 in next week's table when the points from last year's Porsche Grand Prix drop off.
Kerber just hasn't been able to match Williams' results from past year and will thus lose her top spot.
Williams would not be the first tennis player to return to the court following a pregnancy.
Belgian former world No.1 Kim Clijsters retired and had a child before coming back at age 26 and winning threegrand slam titles as a mother. Most marvelled at the idea that the 23-time Grand Slam victor was pregnant in January's Australian Open, when she won yet another title.
Since the birth of son Leo, Azarenka has returned to training and plans to return to competition at the WTA tournament in Stanford, California, in July.
Scottish First Minister Nicola Sturgeon described the election call as "a huge political miscalculation by the Prime Minister". In contrast, nearly all the MPs in May's Conservatives party (325 out of 330) voted for the early election.
The team got out to a 35-26 lead at the end of the first quarter , thanks to a hot start from Russell Westbrook . Wednesday night's game summed up the Thunder this season. "I don't give a (expletive) about the line", he said.
He said he joined the Nation of Islam and in 1995, when he was 17, and attended the Million Man March in D.C.as a lieutenant. He ended up at a Starbucks, where he saw a news report that he was identified as a suspect in the security guard's death.
Adam Kinzinger tells the network that he believes "this was a show of force by the Russians to show us that they are still here". According to a US official, a pair of Russian bombers flew close to Alaska, they came within 35 nautical miles of the coastline.
Keane, who grew up as a Manchester United fan and is from the local area, may feel he has unfinished business at Old Trafford. Toffees manager Ronald Koeman has made no secret of his admiration for the 24-year-old Clarets defender.
Russian Federation and Syria have claimed conventional Syrian weaponry struck a rebel chemical weapons depot, causing the tragedy. French Foreign Minister Jean-Marc Ayrault said French intelligence services would provide proof of that in the coming days.
The Veterans Choice Program Extension and Improvement Act allows veterans to visit private doctors at private hospitals. He said Republicans, Democrats and Independents supported the bill that he says will begin to fix the Choice Program.
He said of Iran, "I think they are doing a tremendous disservice to an agreement that was signed". "I can tell you that". President Donald Trump responded to reports of a shooting Thursday in Paris by saying it looked like a terrorist attack.
Dugan said a major barrier to reading thoughts would be developing non-invasive sensors able of detecting brainwaves. We only share some of those thoughts as speech, which Dugan describes as essentially a compression algorithm.
But Mumbai Indians have a 6-3 lead in the last nine matches. # Shaun Marsh completed 500 runs against Mumbai Indians in IPL. Stoinis eventually made amends for his poor start to the over by dismissing Parthiv Patel for 37 off just 18 deliveries.
US reviewing Venezuela's seizure of General Motors assets
The vast bulk of the seized companies have since closed, contributing to an unprecedented economic crisis rocking the country. Venezuela has been swept by protests since April 4, when the Supreme Court announced it had stripped Congress of its powers.
Ivanka Trump Foregoing Book Tour and Donating Funds to Charity
Now she will be forgoing her book tour in favor of generally cropping up slightly behind people in awkward White House photos. There's some precedent for Ivanka Trump's plan, according to ethics expert Stan Brand of Akin Gump Strauss Hauer & Feld LLP.
Tesla to recall 53000 Model S and Model X vehicles
It enables recharging the Model S 90D -- the first and only Tesla model available in Korea - to 50 percent in about 20 minutes. In November 2015 , Tesla recalled 90,000 Model S cars because of a single report of a seat belt not being properly connected.
Easy choice: Browns CB Haden wants Garrett with No. 1 pick
But the likeliest scenario is that the Browns stick with Garrett , leaving the next 31 picks in the draft open for business. Though it still stands, the Cleveland Browns are on the clock, and time is going by a lot faster than they think.
Stockholm truck attack suspect was facing deportation
Anders Thornberg, head of the Swedish security agency, said the suspect has appeared in our intelligence gathering in the past. Meanwhile, hundreds of people gathered at the location of Friday's attack and placed a number of flowers on the site.
Google Home's assistant can now recognize different voices
So, from now on it will be the Google Home , and not your better-half, providing information regarding your day's schedule. As hinted at earlier this month, Google Home can now recognize multiple users and deliver personalized Assistant results.
Spicer says Hitler comment 'inexcusable and reprehensible'
A spokesman for German Chancellor Angela Merkel said comparing Nazi war crimes to present-day situations "leads to nothing good". The attack in northern Syria left almost 90 people dead, and Turkey's health minister said tests show sarin gas was used.