"Orlando and I are united with our approach", she said, "It's not about the party it's about the coming together of people who will hold us accountable when things get really hard".
While the baby is Perry's first, it will be Bloom's second child.
"There's a lot that will be happening this summer, not only will I be giving birth - literally - but also figuratively to something you guys have been waiting for", she said, referring to her upcoming album.
Following the announcement of her pregnancy, celebrities including Cardi B and Katharine McPhee were among those rushing to congratulate the American Idol judge.
Maybe Katy and her man haven't been watching the news.
Mirtle: The Maple Leafs' hard season now feels destined for disappointment
He finished the game with eight saves in 28 minutes and 41 seconds of action, and was honored at the first star after the game. As Ayers described the moment to the AP after the game, "I had a couple of text messages that told me to get in there".
"Because I've never worn white/But I wanna get it right/Yeah, I really wanna try with you", she sings in the chorus.
The singer in her latest music video "Never Worn White" is seen wearing a beige gown with a big belly bump.
She added that she and Bloom can't wait for the arrival of the baby.
Katy and Orlando started dating in 2016 however, they called it quits a year later.
"Never Worn White" opens to a gentle string version of Felix Mendelssohn's "Wedding March", as a vulnerable Perry, dressed in white, stands against a pink backdrop with a romantic evening sky behind her.
The couple have reportedly been dating since 2016 and got engaged on Valentine's Day previous year.
The last time Perry shared a recent photo of herself on Instagram, it was a shot of her face in which she showed off her new "glow".