Lindsay Lohan poured on the blood and dressed up as the titular character in "Carrie" alongside boxer, Floyd Mayweather (who was sporting a Freddy Krueger getup).
The two were in attendance for "A Night Full of Fright" at the Foxwoods Resort Casino on Oct. 30, and while they were going for frightening, the pair was all smiles.
Sources say that the two were inseparable throughout the festivities -- laughing, embracing and even cozying up in the private VIP section.
Also on HuffPost:
Paris dressed up as Miley Cyrus for the Playboy Mansion Halloween party on Oct. 26.
Nicky dressed up as a sexy schoolgirl for the Palyboy Mansion Halloween party on Oct. 26.
Julianne Hough dressed up as Crazy Eyes from 'Orange is the New Black' as she attended the Casamigos Tequila Halloween party in Hollywood on Oct. 25.
Jesse Tyler Ferguson
Jesse Tyler Ferguson and his husband arrived at a Halloween party in Hollywood on Oct. 25.
John was seen leaving a private Halloween party dressed like the devil in Los Angeles on Oct. 25.
Kristin Chenoweth and Jake Pavelka arrived at a Halloween party in Hollywood on Oct. 25.
Lauren Conrad and William Tell arrived at a Halloween party in Hollywood on Oct. 25.
Chord Overstreet dressed up as Jax Teller from 'Sons of Anarchy' for a Halloween party in Hollywood on Oct. 25.
Martha Stewart as Glinda at the HUB Network's First Annual Halloween Bash on Oct. 20, 2013.
Rico Rodriguez dressed up as a zombie for the HUB Network's First Annual Halloween Bash on Oct. 20, 2013.
Sandra Bullock dressed up as a skeleton bride for an early Halloween party on Oct. 19, 2013.
Neil Patrick Harris
Neil Patrick Harris <a href="http://imgur.com/nJVSBZO" target="_blank">posed with his family</a> for a Halloween photo in 2013.
Katy Perry as Jane Lane and Shannon Woodward as Daria.
"HAPPY HALLOWEEN!! Me and Mariska starting the night!! #boo," the "Smash" star tweeted Wednesday.
Chloe Moretz looked ready to celebrate Halloween as she arrived to Jonathan Ross' annual costume party.
Darren Criss is a boy scout and probably a big fan of "Moonrise Kingdom."
Sean Combs aka 'P-Diddy' dressed as superstar singer Prince complete with a white guitar, purple cloak and a huge wig seen leaving from the Playboy Mansion Halloween party in Beverly Hills.
Jenni 'JWoww' Farley, Roger Mathews
We never thought we'd say it, but the "Jersey Shore" star and her fiancé positively geeked it out.
No sleight of hand here. Christina Milian is the Queen of Hearts.
George Clooney's girlfriend is "Black Swan."
Tish Cyrus, Brandi Cyrus
Pop starlet Miley Cyrus' mum and sister Tish Cyrus and Brandi Cyrus are all dressed up for Halloween as they head to the Roosevelt hotel for a party in Hollywood.
Jeremy Piven as Che Guevara at the Playboy Mansion Halloween Party in Beverly Hills, California on October 27th, 2012.
Sacha Baron Cohen
Sacha Baron Cohen donned a bizarre monkey-cow costume.
Brandon Davis at the Playboy Mansion Halloween Party in Beverly Hills, California on October 27th, 2012.
One Direction singer Liam Payne does his best Batman in London.
Lucy Hale as a unicorn.
Shenae Grimes, Chris March
In this Image released by Mattel, actress Shenae Grimes, from the series "90210", left, has a fitting of her Monster High Frankie Stein Halloween costume created by "Project Runway" alum Chris March, Wednesday, Oct. 17, 2012, in El Segundo, Calif. Grimes will be attending "Glee" cast member Matthew Morrison's 3rd Annual Halloween Bash, dressed as Frankie Stein, daughter of Frankenstein, from the popular Monster High franchise. This year, the popular Halloween party will be sponsored by Monster High. (AP Photo/Mattel, Rene Macura)
Heidi Klum gets fitted for her 13th annual Halloween party at finale sponsored by HobNob Wines, Svedka Vodka And Smartwater on September 3, 2012 in New York City.
Sarah Hyland as Spinelli from "Recess."
Kim Kardashian attends 2nd Annual Midori Green Halloween Party at Avenue on October 27, 2012 in New York City dressed as a mermaid.
Nicole Scherzinger as a vampire.
Kim Kardashian as a leopard.
Holly Madison as Sleeping Beauty.
Fergie as Lindsay Lohan.
Christina Milian as Sulley.
Fergie & Josh Duhamel
Fergie & Josh Duhamel as Angelyne & Dennis Woodruff.
Christina Aguilera as ???
Paris Hilton as Alice.
Kris Jenner as Wonder Woman.
Ashley Benson as Tweedle Dee (or Dumb).
Hugh Hefner as a vampire.
Holly Madison as the Cheshire Cat.
Jessica Alba, Cash Warren, & Honor Warren
Hilary Duff in a Día de los Muertos costume.
Kim Kardashian as Kris Jenner.
Fergie as a sexy cat.
Ryan Seacrest & Julianne Hough
Bonnie & Clyde
Julie Bowen as a scary Bo Peep.
Genevieve Jones & Nicky Hilton
Genevieve Jones & Nicky Hilton as a KISS member and a leopard.
Adam Lambert as a vampire.