From Di Caprio to Jessica Alba to Tobey Maguire, H'wood celebs unwind at '16 Halloween

A bunch of Hollywood celebrities hosted big bashes for this year's Halloween and her are some of the costumes and moments we cannot afford to miss.

Leonardo DiCaprio and Toby Maguire were seen at Mike Meldman's 'Casamigos Halloween Party' with a group of friends all wearing jeans, flannel shirts, wolf masks and wolf glove, reports E! Online.

The 'Spider-Man' star was dressed in regular clothes and some sort of green, monkey mask.

According to Forbes magazine, comedian Seth Rogen's 5th annual 'Hilarity for Charity' event in Los Angeles was one of the first events this year where celebrities put on their Halloween getups. Other celebrities who hosted the night include Kate Hudson, Bette Midler, and Rande Gerber.

Meanwhile, many stars took to social media to showcase their costumes from the night.

Kylie Jenner hosted the an extravagant Halloween dinner where she and her boyfriend Tyga, painted their faces as skeletons. The 'dead dinner' was also skeleton themed, serving lychee eyeball drinks, margaritas in syringes, chocolate cakes in mini caskets.

American singer Halsey was spotted attending 'Brownies and Lemonade' concert in the City of Angels dressed up as none other than an angel. On her Instagram, she captioned her picture as, "Going to bless all the little souls at @TeamBandL."

Jessica Alba, who founded of 'The Honest Company', channeled on her Instagram her best #ABFAB impersonation with her friend, dressed as Patsy Stone and Edina Monsoon from the BBC sitcom 'Absolutely Fabulous.'

At her party in Los Angeles, Kate Hudson dressed as a woman of the 'Wild West' in corset and feathered headgear. Among her guests were Katy Perry and Orlando Bloom, who came as Hillary Clinton and Donald Trump.

'Modern Family' actress Ariel Winter also showed off her bunny tail on her Instagram handle.

Not the end of it all, these celebrations lead up to Heidi Klum's annual Halloween party which will take place on October 31 in New York City.