'Worth It' beauties Fifth Harmony have sent their well-wishes to tour mate and friend Shawn Mendes, after he scored a No.1 in the USA with his first-ever record, 'Handwritten'. 

Songstress Ally Brook Hernandez took to her official Twitter page earlier today (April 24) and congratulated Mendes on the success of his debut album, 'Handwritten', writing:

"MY SHAWNIEE I'm just so so so proud of you & beyond happy for you. #Handwritten is unbelievable. You're such a one of a kind talent. Congratulations on all that's come your way. Just the beginning my friend. I'M NOT CRYING @ShawnMendes."

Back in March, Mendes told Capital FM that he would choose to marry Camila Cabello if he had to pick between her, Little Mix's Jade Thirlwall and actress actress Chloë Grace Moretz: "I know all these girls! Because I know Camila well, I'd probably wife Camila. Lips Chloë and then I'd had to leave it - Jade. Just because I don't know her, sorry. Yeah (Camila) rocks!"

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Watch his music video for 'Aftertaste' below: