Through the years: Carmi, Lorna, Glydel as White Castle girls

White Castle calendar girls Meg Imperial (2015) and Carmi Martin (1985). ABS-CBN News/DLCI

MANILA - Local whiskey brand White Castle has been producing annual calendars since 1969, but it wasn't until 1974 that they started to tap female models to pose in bikinis for the campaign.

Over the years, White Castle Girls have become known for wearing red bikini while posing beside or riding a white horse.

ABS-CBN actress Meg Imperial, the whiskey's ambassador for 2015, was no exception when she shot her calendar in Lipa, Batangas on Friday. (Watch a video of the shoot here.)

Meg Imperial gets ready for her White Castle shoot. Photo by Mario Dumaual for ABS-CBNnews.com

The horse was around by 1974, but the red bikini only became a staple starting in 1980. Among the first in a long line of celebrities who posed for White Castle was Lorna Tolentino, who appeared on the 1982 calendar.

Lorna Tolentino in 1982. Photo from the official website of White Castle/DLCI

Carmi Martin's iconic outing in 1984, which helped launch her showbiz career, had a follow-up a year later, making her the first White Castle girl to be featured for two consecutive years.

Carmi Martin in 1984. Photo from the official website of White Castle/DLCI

Former actress and now-politician Cristina Gonzales similary became a favorite, clinching back-to-back outings for the whiskey brand in 1992 and 1993.

Cristina Gonzales in 1992. Photo from the official website of White Castle/DLCI

At the time known as a sexy actress, Glydel Mercado went topless for White Castle Girl in 1996. She returned as the whiskey's calendar girl in the two years that followed.

Glydel Mercado in 1996. Photo from the official website of White Castle/DLCI

Dancer Angela Velez wowed with different poses for each month of the year 1999. She remained the White Castle Girl until the turn of the new millennium.

Angela Velez in 2000. Photo from the official website of White Castle/DLCI

"Star Circle Quest" finalist Roxanne Guinoo, who was known for her wholesome image, shocked fans with her decision to don the iconic red bikini for the 2007 calendar.

Roxanne Guinoo in 2007. Photo from the official website of White Castle/DLCI

RR Enriquez of the "Wowowee" fame became White Castle's ambassador for two years starting 2009. While she had on the two-piece swimsuit, the staple white horse was notably absent.

RR Enriquez in 2010. Photo from the official website of White Castle/DLCI