The stunning UCD student (19) is in Las Vegas for the run-up to the televised competition, and has proven over and over again how dedicated she is to getting a great picture.
Rozanna took part in an official Miss Universe shoot alongside Miss Albania earlier this week, and while her fellow beauty queen sported a bikini -- the Assets beauty opted to once again take it all off.
With just a strategically placed arm over her chest, Roz leaves little to the imagination to match her barely there black bikini bottoms.
Contrary to her other topless shoot earlier this week -- where she was accessorised with several oversized necklaces -- this time she is covered in animal print body paint along with Miss Albania.
And while both hopefuls sport their best pouts as they show off their stunning figures, it's our beauty queen who once again steals the spotlight.
This is the first year that pageant officials have allowed topless shoots as a part of the competition -- and Roz has shown that she has no problem with the latest change.
Meanwhile, the catwalk queen has been living it up during her stint in Nevada -- and recently celebrated the birthday of fellow beauty queen Miss Australia in exciting fashion.
In true star style, a handful of the contestants took to the nearby Lake Mead in the world famous Hoover Dam to jetski from their chartered yacht.
But it hasn't all been fun and games for the Tipperary native, who is working out three times a day to maintain her super-slim physique.
And her risque wardrobe choices seem to be paying off -- Roz is still being tipped to be the first Irish winner of Miss Universe since nabbing the attention of top pageant coach Miguel Martinez.
She jetted off to Colombia for intense pageant training before Las Vegas, and received the ultimate honour when she was selected from nearly 100 girls to receive the special training ahead of the televised final, as well as a bespoke wardrobe of couture designer dresses worth up to €60,000.
She also made a trip to the orthodontist during her South American stint, where she had her teeth whitened and filed down for a Colombian television segment.
The stunning brunette will battle it out with nearly 100 other beauties from all around the world for the coveted crown at the star-studded final at the Mandalay Bay hotel in Las Vegas on August 23.