'What's My Name?' Rihanna kicks back with friends and a bottle of tequila during a day off from her tour

By Andrea Magrath

Last updated at 9:08 AM on 14th July 2011

Touring the country for months on end is undoubtedly gruelling.

So it is understandable that on a rare day off, superstar singer Rihanna would want to kick back and have some fun with her friends.

The What's My Name hitmaker did just that today as she knocked back a few drinks with her girlfriends at the poolside cabana of her hotel.

Day off: Rihanna enjoys some down time at the pool bar of the Setai Hotel in Miami on a day off from her tour

The 23-year-old showed off her curves in a blue bikini and a white mesh cover up and went for a natural look with bed head hair and no make-up.

Rihanna was pictured having a laugh with her friend at the bar as she held a bottle of Don Julio tequila in her hand.

Clearly having a ball, the singer tweeted: 'MIAMI IS THE S***!!!!!'

Letting her hair down: Clearly having a ball, the singer tweeted: 'MIAMI IS THE S***!!!!!'

This round's on me! Rihanna picked up a bottle of Don Julio tequila

She also stopped to chat to a fan who approached her and enjoyed some lunch by the pool, according to onlookers.

Tomorrow night it's back to work for the star as she resumes her tour with a performance at the Bank Atlantic Center in Fort Lauderdale.

No hands-free: Rihanna carried her drink in on her hand and her phone and a pair of headphones in the other

Wanting to join the party? As Rihanna got her drink on a crowd gathered to watch

It will be a busy month for Rihanna as she plays dates in North Carolina, New Jersey, New York, Philadelphia and Boston, before heading to the UK to play the V Festival in August.

And that's just her performing commitments.

It was announced this week that Rihanna has been signed as the new face of Emporio Armani's lingerie line.

Natural beauty: The 23-year-old made the most of her day off by going without make-up

Svelte: The What's My Name singer showed off her curves in a mesh dress over a bikini

Giggles: The singer shares a laugh with a friend

She will appear in the autumn-winter 2012 underwear ad, replacing actress Megan Fox.
Tennis player Rafael Nadal has also been signed but it is not yet known if the pair will be starring in the same campaign.

All friends! The singer was seen putting her arm around a friend as she chatted to a group

Rihanna is already a darling of the beauty industry and has been the face of Cover Girl cosmetics since 2007, and she recently signed a deal with Nivea.

The songstress also fronts the Vita Coco brand, coconut water popular with celebrities.