The actress celebrated her 30th birthday on Monday (10 March) and her husband-to-be, fellow actor Jason Sudeikis, was all smiles as the couple went for a walk through New York.
Olivia kept her growing baby bump nice and toasty by wrapping herself up in a very chic striped coat.
She popped a hat on, letting her hair tumble down naturally, while We're The Millers actor Jason lovingly grabbed her hand.
Jason, 38, also carried a camera with him for the walk, no doubt hoping to take some lovely snaps of his birthday girl.
Olivia and Jason have been dating for several years, and got engaged in early 2013.
Now seven months pregnant, Olivia is due to give birth in May.
Happy birthday, Olivia!
What do you think of Olivia's maternity style? Tell us below.
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Copyright: WENN Lexie Appleby/Future Image/Bridow/Instagram