She’s getting so big!

Holly Madison’s daughter Rainbow recently turned three-years-old — and we can’t believe how much she’s grown!

The former Playboy model posted a snap of her baby girl eating some sweet treats, which she captioned, “My baby girl is 3 today! I can’t believe how time flies!”

RELATED: Kendra Wilkinson Shares a Picture of Her Adorable Kids — See How Much They've Grown!

https://www.instagram.com/p/BCkLkD2lTLc/

The reality star will soon be a mother-of-two as she previously confirmed she’s expecting baby No. 2 with husband Pasquale Rotella.

Though she does not know the gender, Holly revealed, “I’m kind of feeling the boy vibe. We’ll see how psychic I am!”

Congrats to the beautiful family!

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