Hines also shared the same photo, writing, “First class back post and she crushed it!! @jessicaalba.”
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The star was active during her pregnancy, often visiting Cycle House in the lead up to her son’s birth.
Since his birth, Alba has been spending some mother-son bonding time — specifically binge-watching television.
The new mom shared a sweet selfie of her and her baby boy to Instagram at the end of January, explaining that the pair were making their way through Netflix’s Jane Fonda and Lily Tomlin series Grace and Frankie.
“Tuesdays/all the days w my Hayes, #chillin watching @graceandfrankie,” Alba wrote in the caption. “I’m on season 4 and I don’t want it to end ”
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She added the hashtags, “#bingewatching #graceandfrankie #lovethisshow #newbornmom.”
Warren shared a photo of himself gazing down at his son after his birth with a sweet message that explained that Hayes had arrived a bit early but the family couldn’t have been more overjoyed.
“Hayes Alba Warren: You sure know how to ring in the new year!” Warren wrote in the caption. “You showed up a few days early but we couldn’t be any happier.”
“Your Mamma is the strongest woman I know … you’re so lucky to have her by your side,” he added. “You have two amazing sisters who already adore you and I know you’ll be thankful to have them guide the way.”