Former TOWIE Star Billi Mucklow has announced she's expecting her second child with fiance Andy Carroll.

The reality babe, 28, revealed the news in a sweet Instagram snap showing their young son Arlo placing a hand on her growing bump.

"Suns Out Bump Out #babyCarrollontheway #babyonboard ," the bikini-clad star wrote alongside it.

The trio are currently holidaying in Dubai