It's hard work baby! Victoria's Secret model Erin Heatherton has an unexpected co-star in between takes for her latest swimwear shoot

Supermodel Erin Heatherton had an unlikely partner during the Victoria's Secret bikini shoot in St. Barts Friday morning - a tiny baby boy.

The gorgeous 23-year-old was spotted beaming as she cradled the adorable infant, wearing a red-striped hoodie, in between set-ups.

At one point, someone placed an adult pair of Ray Ban sunglasses on the precious baby, much to Erin's amusement.

Oooh baby! Supermodel Erin Heatherton had an unlikely partner during the Victoria's Secret bikini shoot in St. Barts Friday morning - a tiny baby boy

With soft curls and minimal make-up, the five-foot-11 beauty showcased a variety of sexy two-pieces for VS's summer catalogue whilst basking in the sunshine of the French West Indies.

'Shooting @victoriassecret swim! My freckles are back on, productive day already ;)' Erin tweeted to her 148,000 followers, along with a b&w selfie.

It's not hard to see why Heatherton has become one of the lingerie brand's most popular Angels for the past five years.

He looks good on her: The gorgeous 23-year-old was spotted beaming as she cradled the adorable infant, wearing a red-striped hoodie, in between set-ups

Bikini beauty: It's not hard to see why Heatherton has become one of the lingerie brand's most popular Angels for the past five years

Bedazzled: Erin looked tanned and toned as she flaunted her incredible figure in a racerback white style with blue rhinestones on the halter straps

Erin looked tanned and toned as she flaunted her incredible figure in a racer-back white style with blue rhinestones on the halter straps.

The blonde bombshell, whose last boyfriend was Leonardo DiCaprio, mostly posed before white sheets and aquamarine waters on the sandy beach.

The Midwestern model also donned a colourful sequinned white bikini which boosted her ample cleavage.

Variety pack: With soft curls and minimal make-up, the five-foot-11 Amazon showcased a variety of sexy two-pieces for VS's summer catalogue

'My freckles are back on': Erin tweeted this b&w selfie before embarking on her 'productive day'

Legs for days: The blonde Amazon showed off her mile-long legs in a teal two-piece and a white sequined suit

Erin made sure to stick out her pert derriere while wearing another white design with a dual-strapped bikini bottom.

Heatherton's long pins are evidently her asset to be proud of, as she leaned up against a wall with one knee out.

The Illinois-born beauty flirted with the camera as she played with her hair, which remained down for the majority of the shots, only being placed in a bun between takes.

You can count her abs: The Midwestern model also donned a colourful sequined white bikini which boosted her ample cleavage

Hard day's work: The blonde bombshell, whose last boyfriend was Leonardo DiCaprio, mostly posed before white sheets and aquamarine waters on the sandy beach

Sun goddess: Erin took a moment to bask in the sunshine of the French West Indies during her shoot

Pin parade: Erin made sure to stick out her pert derriere while wearing another white design with a dual-strapped bikini bottom

Making love to the camera: The Illinois-born beauty flirted with the camera as she played with her hair

Erin also looked lovely in a nautical navy string bikini, a black polka dot suit, a floral design, and a red tank-style suit.

In between set-ups, the Victoria's Secret stunner would get swarmed by hair, makeup, and wardrobe personnel as she adjusted her tops for the best possible fit.

Erin was far more covered up in her last shoot for XOXO's Spring 2013 campaign.

Blonde bombshell: Heatherton also looked lovely in a nautical navy string bikini

I'm every woman: Erin posed in a black polka dot suit with dangling strings and a more matronly red tank-style suit

Pop a squat: The bikini stunner got on her knees to better showcase this floral two-piece

Heatherton received support from fellow lingerie model Anne Vyatitsyna this week as she tweeted about her friend’s new gig.

She replied, ‘thank you beauty!!'

Erin was originally discovered while vacationing on South Beach in Miami.

Supermodel: Heatherton is also currently fronting XOXO's Spring 2013 campaign

Pretty in pink: The Midwestern model struck a few poses in this chic pink-and-black design

Touch your toes: The Illinois-born beauty loosened up before shoots by stretching her incredible body

She then moved to New York and walked runway for Diane von Fürstenberg, and has since modeled for Shiatzy Chen, Oscar de la Renta, and Tommy Hilfiger.

Erin's amazing body and cherubic face has graced the covers of D, Grazia, Velvet, and MUSE.

She'll play 'Head Cheerleader' in the sequel Grown Ups 2, due out July 12.

Stretch it out: One way Erin stays long and limber for shoots is clearly through extensive stretching

Camouflage: The amply-charmed model's aquamarine bikini blended with the picturesque French Indies waters

Laid back: Erin reclined in the sexiest way possible on a striped blanket

The comedy stars Adam Sandler, Salma Hayek, Andy Samberg, Maya Rudolph, and Chris Rock 

Erin will also appear in the musical biopic, Skum Rocks!, with Kevin Bacon, Julianne Hough, Matthew Broderick, and Brooke Shields.

Her turn to shoot: The sometime actress got behind the lens for a few snaps of her own on a break

It takes a village: In between set-ups, the Victoria's Secret stunner would get swarmed by hair, makeup, and wardrobe personnel as she adjusted her tops for the best possible fit

Moving into movies: She'll play 'Head Cheerleader' in the sequel Grown Ups 2, due out July 12