Fans speculate that Jayson Tatum's rumored girlfriend Ella Mai is pregnant after R&B star was spotted celebrating Boston Celtics' NBA Finals win

Ella Mai is certainly Boo'd Up.  

The R&B songstress, who is believed to be dating Celtics star Jayson Tatum, was seen celebrating Boston's historic NBA championship Monday night. 

In videos posted to social media, fans pointed out that Mai seemed to be debuting a baby bump underneath her beau's jersey. 

One clip showed the Grammy winner at a party after the Celtics defeated the Dallas Mavericks 106-88 at TD Garden. 

She was also seen walking down a hallway at the arena, pausing briefly to greet one of Tatum's teammates. 

Mail Sport has reached out to reps for Mai but did not immediately hear back.

Ella Mai was seen celebrating the Boston Celtics' historic NBA championship Monday night

She's been linked to Jayson Tatum since 2019, but the romance has never been confirmed 

'Wow. Didnt know she was pregnant,' one person commented on the Shade Room's post. 

'Tatum won on the court and winning off the court,' another chimed in.

'Awwwwww she's so pregnant & adorable!' a third wrote.

Another added, 'Championship and a new baby,' while someone else echoed the sentiment, 'Tatum won twice, I'm happy for him.' 

The pair have been romantically linked since 2019 when she was spotted sitting courtside at Madison Square Garden when Tatum's team took on the New York Knicks. 

Eagle-eyes fans also theorized that she was in the hooper's home during an Instagram Live session the following year. 

They were spotted together publicly for the first time in 2022 when they both attended Michael Rubin's annual Fourth of July White Party in the Hamptons.

Tatum helped lead the Celtics to their historic 18th NBA title this week

Mai doesn't currently have any children, however Tatum shares one son with his ex-girlfriend

Tatum shared a sweet moment with his mini-me son, Deuce, after the win at TD Garden

However, the X-Factor alum =dodged questions about the basketballer during an appearance on 'The Breakfast Club' that year.

'There's rumors that you're a Boston Celtics fan,' co-host DJ Envy began.

'Oh really?' she coyly replied.

'They say you're a Boston Celtics fan and possibly dating a Boston Celtic. Is there any truth to that?' he asked, to which she responded, 'I'm a basketball fan definitely, but you know I'm not one to talk about my dating life.'

Mai doesn't have any children, however the power forward welcomed his six-year-old son Jayson 'Deuce' Tatum Jr. with his ex-girlfriend, Toriah Lachell, in 2017. 

Tatum, who was instrumental in securing the Celtics' historic 18th NBA title Monday night, shared a sweet moment with his mini-me after the team's commanding win. 

'Daddy,' Deuce said sweetly, as he wrapped his arms around the newly-minted NBA champ.

The 26-year-old then lifted the toddler above his head as green confetti rained down on the pair.