The 25-year-old was enjoying her tanning time in Barbados in the aqua two-piece, while 18-month-old Kai was covered up in a matching bathing suit.
The WAG, who is on holiday with husband Wayne Rooney and their son, lay back on a sun lounger to work on her tan and covered up in a loose kaftan when the heat got too much.
Feeling blue! Coleen Rooney showed off her figure in the halter neck two piece while on holiday in Barbados
While in the Caribbean, the couple have been capturing their own special holiday moments and Coleen has been keen to share them with her Twitter followers.
The 25-year-old has posted a series of pictures of their trip to her Twitter profile including Wayne performing karaoke, an adorable picture of herself and Kai and a snap of herself in one of her own designs.
Pool time! Coleen Rooney has been posting her own family snaps of her holiday to Twitter including this one of her and her adorable son Kai
To hot to handle: The scorching heat appeared to leave Coleen hot and bothered and reached for her kaftan to cover up
In one snap, which she called 'Pool Time', Coleen is posing with her 18-month old son dressed in a blue bathing suit and matching hat.
And with his cheeky grin little Kai looks just like Wayne.
The night before the 25-year-old Liverpudlian footballer paid tribute to his hometown legends accomopanied by a piano player at the classy tropical nightspot.
Writing on his official Twitter account, he said: 'Having a great night in Barbados! In lexys piano bar with @ColeenRoo and friends.Been on the mic for about 7 songs and felt like a rock star.'
Lounging around: Coleen has been taking some time off to relax in Barbados with her husband and son
Babe in blue: Coleen's kaftan was also matching her bathing suit
A clearly proud Coleen, 25, tweeted the pic of her husband in action and added: 'Fantastic night in piano bar!! Wayne on mic doing Beatles mix!!'
He'd written earlier@: 'Had a boss day with Kai and @ColeenRoo. Going to karaoke bar in a bit. Any requests for me on what to sing?'
The couple's 18-month-old son was being looked after by Coleen's parents, who are on holiday with them.
No tan lines: Coleen took off her bikini straps to get an even tan