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Britney Spears is happily documenting her pregnancy following this week’s announcement she’s expecting her third child.
The pop star posted a video shared to Instagram on Tuesday in which she calls attention to some of the bodily changes she’s experiencing.
“So I have to model my clothes now before I really start showing…,” her Instagram caption begins.
In the beginning of the one-minute clip, Spears rocks her hips from side to side as she wears a floral crop top accessorized with a flower choker, and low-rise gray pants, exposing her midriff.
BRITNEY SPEARS’ EX KEVIN FEDERLINE CONGRATULATES STAR ON HER PREGNANCY WITH SAM ASGHARI
Britney Spears’ fiance Sam Asghari said, “Fatherhood is something I have always looked forward to.”
(Vivien Killilea/Getty Images for GLAAD)
“I had to do the flower n my neck like @sarahjessicaparker … I actually do have a small belly here but at least my pants fit … Well barely!!!” Spears’ caption continues.
The video continues to show the “Toxic” singer in a variety of other outfits. One seemed to be an ode to her “Baby One More Time” music video as she wore a white buttoned-down shirt tied above her belly with a black pencil skirt and heels. Another look shows the starlet in a floral black and red mini dress with black combat boots.
“Psss is anyone curious why I’m 4 sizes smaller by the door ???” her caption concludes.
BRITNEY SPEARS SAYS SHE’S ‘HAVING A BABY’
The 40-year-old pop star took to Instagram on Monday, sharing an image of a pink teacup and flowers with a lengthy caption.

Britney Spears appeared to make her pregnancy announcement on Instagram on Monday.
(Jordan Strauss/Invision/AP, File)
“I lost so much weight to go on my Maui trip only to gain it back,” she began. “I thought ‘Geez … what happened to my stomach ???’ My husband said ‘No you’re food pregnant silly,'” referring to Sam Asghari, 28.
“So I got a pregnancy test … and uhhhhh well … I am having a baby.”
The star went on to say, “I obviously won’t be going out as much due to the paps getting their money shot of me like they unfortunately already have … it’s hard because when I was pregnant I had perinatal depression … I have to say it is absolutely horrible.”
A TIMELINE OF BRITNEY SPEARS’ CONSERVATORSHIP
“Women didn’t talk about it back then … some people considered it dangerous if a woman complained like that with a baby inside her … but now women talk about it everyday … thank Jesus we don’t have to keep that pain a reserved proper secret.”
Spears concluded with, “This time I will be doing yoga every day !!! Spreading lots of joy and love.”
A rep for Spears didn’t immediately respond to Fox News’ request for comment.

Britney Spears and Sam Asghari got engaged last September.
(Kevin Winter/Getty Images)
Her fiancé, Asghari, took to Instagram on Monday to confirm the news, sharing a picture of a family of lions with a caption detailing what fatherhood means to him.
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“Marriage and kids are a natural part of a strong relationship filled with love and respect. Fatherhood is something i have always looked forward to and i don’t take lightly. It is the most important job i will ever do,” he wrote, adding a praying hands emoji.
Meanwhile, some of Spears’ fans were confused by her “food pregnant” comment.

The singer’s conservatorship ended in 2021.
(AP Photo/Chris Pizzello)
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Spears shares her two sons, Sean, 16, and Jayden, 15, with her ex-husband, Kevin Federline.
Federline’s attorney, Mark Vincent Kaplan, told NBC News on Monday, “He wishes her the best for a happy, healthy pregnancy and congratulates her and Sam Asghari as they plan for the excitement of parenthood together.”