No sexy Halloween here! Sandra Bullock and Melissa McCarthy dress as fishermen to take their children trick or treating

By Daily Mail Reporter

PUBLISHED: 21:40 EST, 31 October 2013 | UPDATED: 00:51 EST, 1 November 2013

They played opposite each other as an FBI Agent and detective in the comedy blockbuster The Heat earlier this year.

And for Halloween, mothers Sandra Bullock and Melissa McCarthy put their skills to good use as they attempted to go undercover when trick or treating with their families.

Ignoring the trend to use Halloween as an excuse to dress in the skimpiest of clothing, the two were virtually impossible to recognize as the fisherman for Gorton's Fisherman seafood company.

We can see you! Melissa McCarthy joins Sandra Bullock and her little man Louis Bardo while trick or treating in LA

Louis, Sandra's adorable son, was dressed up as a skeleton for the big day.

Meanwhile it seemed as though Melissa, 43, had brought along her daughter Vivian dressed as a bat.

While his mother appeared to be a rather robust figure if her outfit, little Louis kept hold of Sandra's hand throughout.

Feeling The Heat: Co-stars Melissa McCarthy and Sandra Bullock go undercover both dressed up to resemble the Gorton's Fisherman logo

Sandra, 49, revealed she had adopted her son Louis back in 2010 following her split to Jesse James.

Melissa has two daughters with her actor husband Ben Falcone who came dressed as a robber for the occasion.

Both Sandra and Melissa had been lined up for a sequel to their successful comedy but Sandra recently denied this.

Dream team: Despite their chemistry, Sandra has revealed that she won't sign up for a sequel to The Heat

Fisherman's friends: Melissa and Sandra are seen trick or treating with Melissa's actor husband Ben Falcone dressed as a robber

Trick: Sandra Bullock goes undercover with her son Louis for Halloween in LA

She told TheWrap.com: 'I'm not doing a sequel to 'The Heat'. I've done two sequels. They were horrible. What Melissa and I had was beautiful. We might do another film together. I think we should do a silent film together."

The film's leading ladies formed a close bond on the set of the hit comedy, as did their children, and Bullock hopes to remain friends with her co-star.

She added: 'We do well with our play dates. We're going to keep doing sequels to our play dates.'

Partners in crime: Melissa and Sandra joined forces when it came to taking their children out for Halloween

Director Paul Feig confirmed a script for the sequel has been written and he would be 'very sad' if Sandra didn't return.

He added: 'It would be very hard. They're so great together. Their chemistry is so awesome. I would be very sad if I didn't have both of them back.'

Meanwhile, Feig is set to re-team with McCarthy for a third time on a James Bond-esque spy comedy, 'Susan Cooper', which will shoot next spring.

He told Page Six: 'I don't want her [to be able] to beat up a 300-pound giant .

She has to use her wits to do it. Women make the best spies because they can figure out how to get in with somebody, gain their trust and be a friend ... still, if she has to kick ass in some way, she can.'

Standing tall: Although they will not star together in a sequel to The Heat, Melissa and Sandra have clearly become good pals