One for good luck: Pregnant Molly Sims gets a kiss from son Brooks as she shows off her growing baby bump on the set of Ted 2

Last month she announced that she is expecting her second child.

But at four months pregnant Molly Sims showed no signs of slowing down on Monday as she paid her husband film producer Scott Stuber a visit on the set of Ted 2.

There to help him get through the potentially stressful day, the 41-year-old was joined by her son Brooks who both adorned both his parents with kisses during takes.

One for the money... Molly Sims received a kiss from her son Brooks on Monday on the set of Ted 2

One for the money... Molly Sims received a kiss from her son Brooks on Monday on the set of Ted 2

Two for the show... Sims' husband Scott Stuber also got in on the action as he adorned her with a peck

Two for the show... Sims' husband Scott Stuber also got in on the action as he adorned her with a peck

In good spirits the actress was seen with a large smile plastered across her face as her two favourite guys walked around the set with her.

Keeping her bump unwraps, the Sports Illustrated model wore a loose fitted burgundy jumper.

Hiding her eyes with a pair of aviator shades, Molly teamed the knitted top with a pair of plum jeans, black leather brogues and a Chanel handbag. 

In good spirits: The 41-year-old wore a colour coordinated outfit as she hid her eyes behind aviator shades

In good spirits: The 41-year-old wore a colour coordinated outfit as she hid her eyes behind aviator shades

Doting wife: Molly beamed as he clutched onto her husband's arm as he held their young son

Doting wife: Molly beamed as he clutched onto her husband's arm as he held their young son

Growing brood: The two-year-old beamed as his father signalled to him to wave to photographers

Growing brood: The two-year-old beamed as his father signalled to him to wave to photographers

Learning about the family business: Brooks was seen playing with his father's headphones 

Learning about the family business: Brooks was seen playing with his father's headphones 

Wearing her hair down in loose curls, the actress was seen chatting with stars of the movie, which her husband is producing,  Amanda Seyfriend and Mark Wahlberg.

Loving her day on set Molly took to her Twitter account to post a snap of her husband and son.

The caption on the image read: 'Working hard with Daddy! #ted2 #veryexcited'. 

'Working hard with Daddy': Molly took to Twitter to post a picture of her son and husband as they took a seat

'Working hard with Daddy': Molly took to Twitter to post a picture of her son and husband as they took a seat

Beauties: The pregnant model disguised her growing bump as she chatted with Amanda Seyfried

Beauties: The pregnant model disguised her growing bump as she chatted with Amanda Seyfried

Action: Amanda, who replaced Mila Kunis in the sequel of Ted as the lead female role, had no problem taking control as she sat behind the wheel of a car to film a scene with Mark Wahlberg

Action: Amanda, who replaced Mila Kunis in the sequel of Ted as the lead female role, had no problem taking control as she sat behind the wheel of a car to film a scene with Mark Wahlberg

In September Sims revealed she and Scott were expecting their second child by posting a message on her website.

'I can't even [begin] to explain just how excited we are for a new baby,' she wrote on Tuesday. 'We are so, so, so blessed as a family, and I'm speechless at the fact that we have the opportunity to bring a second bundle of joy into the world. 

'As a new mom to Brooks, an entire world of motherhood opened to me along with a thousand and one questions.

'I absolutely cannot wait to see what life will be like as a mother to a toddler and a newborn, and I really can’t wait to see Brooks as an older brother to Baby #2!'  

Expectant mommy: Molly announced last month via her blog that she is pregnant with her second child 

Expectant mommy: Molly announced last month via her blog that she is pregnant with her second child 

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