The 34-year-old presenter beamed as pulled a pout while on a romantic break with her boyfriend Jack Street.
Rocking braids in her hair and sporting minimal make-up, Caroline said: "Kiss from Mexico."
Caroline ditched her beauty essentials for the relaxing trip as she posed in black frame sunglasses and a gold chain draped around her neck.
She later added, in reference to Friends character Monica Bing's hair troubles in Barbados: "Having serious 'Monica' hair issues in Mexico.... Giving myself CORNROWS ...."
Caroline, who wrapped up her presenting duties for the ITV2 spin-off show in December, is enjoying a well-deserved break with her beau.
The couple, who landed in Mexico last week, have been dating for around five months after first being spotted together at the Glastonbury and Wireless music festivals.
In another snap posted to Instagram, the couple looked like they were in complete bliss as they sunbathed on the beach while sharing a pair of headphones to listen to music.
Caroline also took a close-up photo of music manager Jack getting some drinks at the beach bar. She said: "A real man's drink."