That was fast! Just one day after Jeremy Bieber and Chelsey Rebelo tied the knot, the duo revealed that they're expecting their first child together! Justin Bieber's dad made the sweet reveal on Instagram on Feb. 21, showing off Chelsey's already growing baby bump in a bikini with the caption, "My beautiful wife and…."

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My beautiful wife and….

A post shared by Jeremy Bieber (@jeremybieber) on

Chelsey is reportedly 4-5 months along, according to TMZ, and the pair is expecting a baby girl. The couple used pink as an accept at their wedding to honor the upcoming daughter.

They were immediately swarmed with congratulations from fans. "I’m so happy for them ❤️❤️❤️God bless them and the new Bieber that’s on the way ??," said one excited supporter. "Congratulations on your pregnancy!" said another. Even Justin's close pal Alfredo Flores chimed in, writing, "congratulations man, So excited for you!"

This week has been full of excitement for the pair, who got married in a beautiful ceremony in Jamaica on Feb. 19 surrounded by the children they each have from previous relationships. Justin was there (along with sweetheart Selena Gomez), plus Jeremy's other kids Jaxon and Jazmyn who stood on either side of the couple at the altar. Chelsey's daughter Allie was next to Jazmyn, and they looked like one big happy family already!

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A post shared by Chelsey Bieber (@chelseybieber) on

The couple got engaged exactly two years earlier on Feb. 19, 2016, and they're still madly in love. Chelsey described the celebration as "the most amazing day ever. I married my best friend! I love you!" Jeremy posted a photo of the ceremony simply captioned "family," but at the time we didn't know that the family was about to grow! Congratulations Jeremy and Chelsey, we can't wait to meet the little girl!