“I’m going to be a big brother.”

That is what the sign reads in a very adorable pregnancy announcement.

Alisa Fraser from The Block announced that she is pregnant with her second.

Fraser posted this adorable photo to her and her twin sister’s, Lysandra, Instagram account.

Image via Instagram.

She captioned the image with:

Alisa made a joke about not being pregnant with twins (on the assumption that twins might run in the family with her being a twin).

Alisa and her sister Lysandra first appeared on The Block : Sky High and then came back to compete on The Block: Fans vs Faves. They have since made guest appearances.

Read more: The Block’s Bec shares the ups and downs of her second trimester.

Both have left their jobs as police officers and own their own interior design company,

Alisa and Lysandra Collections

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Image via Instagram.

Following The Block: Sky High, Lysandra separated from her husband while Alisa prefers to keep her husband out of the reality TV spotlight.

Congratulations to the little family and we can't wait to meet the new arrival in January.

To re-live The Block Fans vs Faves experience TAP on the image below to scroll through the gallery of all the rooms:

GALLERY: Our favourite Block makeovers

Kyal and Kara

Kyal and Kara's master bedroom

Kyal and Kara's bedroom

Kyal and Kara's bathroom

Kyal and Kara living room

Kyal and Kara's kitchen

Brad and Dale

Brad and Dale living room

Brad and Dale's kitchen

Brad and Dale's master bedroom

Brad and Dale's bedroom

Alisa and Lysandra

Alisa and Lysandra's kitchen

Alisa and Lysandra's living room

Alisa and Lysandra's master bedroom

Alisa and Lysandra's bedroom

Alisa and Lysandra's bathroom

Chantelle and Steve

Steve and Chantelle's kitchen

Steve and Chantelle's living room

Steve and Chantelle's bathroom

Steve and Chantelle's master