Bikini-clad actress Bella Thorne displays her armpit hair on the beach in Hawaii

Bella Thorne, American singer-actress is spending her entire Hawaiian vacation in a swimsuit.

She showed off her armpit hair while out for some beach fun on Saturday.

While re-adjusting her hair into a messy ponytail on the back of her head, she displayed her underarms.

She wore a tiny olive-colored top and it has the former Disney star's ample assets, while the low cut bikini bottoms resulted in a perfect view of her admirable abs.

She paired her look with minimal accessories and included a chunky metal wrist watch, a large ring, a plethora of chain necklaces and a crucifix earring attached to her left ear.

The Shake It Up starlet looked to be mostly make-up free, though did seem to be wearing a slick of watermelon-tinted lipstick.

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After her dip she joined up with her very boyfriend Mod Sun, 31.

He wore a green swim trunks into which he tucked swatches of white and black polka dot and red fabric.

Mismatched socks and low-cut sneakers completed his exceedingly eclectic outfit.

His bling was composed of a number of charm necklaces, a thicket of bracelets and some massive circular sunglasses.

He also hauled along a classic satchel slung over his right shoulder.

Bella later changed a few items of clothing as well, including some grey basketball shorts emblazoned with a milk carton, pink socks and grey trainers.

Pink clear frame shades shielded her eyes from the tropical sun.

She also posted a sizzling photo of herself lounging in a red Filthy Fangs bikini, similar to one she wore the day before. Filthy Fangs is of course her own fashion brand.

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