The couple, who got married on 14 September at Villa Pizzo in Lake Como, Italy, headed over to Italian fishing village, Portofino, to celebrate being husband and wife.
In the cute snap posted to Instagram, model Chrissy bares her cleavage in a white bikini and is seen tenderly planting a kiss on John's forehead with her eyes shut.
Chrissy, who also flaunted her sparkling engagement ring and wedding band, said: "Putting my @beachbunnyswimwear bridal line to good use in Portofino!"
Meanwhile, R&B singer John was all smiles as he cuddled up to his wife.
The couple, who got engaged in 2011 after four years of dating, said 'I Do' in an intimate ceremony that was attended by star-studded guests including Kanye West and Stevie Wonder.
Chrissy, who said this week on Twitter that she found it difficult keeping her wedding date a secret, later posted a photo of her stunning Vera Wang dress, which was just one of three dresses by the designer that she wore for her big day!
In another photo posted to Instagram, Chrissy debuted her second dress, on this occasion wearing a strapless ivory gown. Both Chrissy and John looked over the moon to be married, and were seen embracing each other outside the venue.