Britney Spears' bikini body is in full effect as she not only shoots her latest video "Work Bitch" but she is also preparing for her residency at Planet Hollywood in Las Vegas this fall.

The "Ooh La La" singer a posted a photo via Twitter on Sunday in a tight bright turquoise bikini exposing her toned abs and firm legs.

In the sexy picture the mother of two stands in what looks to be a trailer with her blonde hair slighty disheveled as she sports a wide grin.

Attached to the photo of the star who is wearing silver sky high hells was the caption "#WorkBitchDay2."

Spears tweeted earlier in the day, "Gonna get my tan on in the desert in between shots on the #WorkBitch set today It's HOT out here people!"

According to Us Weekly, Britney Spears is set to debut new music and kick off her residency at Planet Hollywood in Las Vegas this fall, with a new track scheduled for September 17th.

On Sunday the "Toxic" singer teased fans via Instagram giving them a sneak peak at the upcoming video featuring a snapshot of a monitor focused her face and toned abs.

The "Everytime" singer can be seen wearing a cropped yellow-and-black lace corset top and long black leather gloves.

The singer posted on Twitter, "Hot day on set... ;) A little dirty, little flirty, danced my ASS off. Stoked for tomorrow!"

Spears has been putting in extra hours at the gym in order to get in shape for her return to the stage. Earlier this year she told Shape Magazine, "The [Vegas] performances won't be simple -- they'll be a massive party from start to finish"

She added, "And to pull this off, I have to be in top condition and running at full speed."

Click HERE to see photos of Britney Spears on and off the set of "Work Bitch."

What do you think of the 31-year old's bikini body? Leave us a comment below.