See hot new photos of Vampire Diaries actress Kat Graham showing off her slim bikini body and making out with fiance Cottrell Guidry on a beach in Santa Monica, Calif. on Oct. 14. Credit:

Ready to walk down the aisle . . . once she puts some clothes on! Kat Graham looked smoking hot while hitting the beach in Santa Monica, Calif. with fiance Cottrell Guidry on Monday, Oct. 14. The 24-year-old Vampire Diaries actress showed off her slim body in a strapless neon pink and black bikini. 

Graham went for a stroll along the shore while holding her adorable tiny dog Izzy. Actor Guidry walked alongside his bride-to-be, and went shirtless in just a pair of rolled-up jeans.

After confirming reports she was engaged in June, Graham opened up to Us Weekly about wedding planning at the Teen Choice Awards in August. "It's been hard because I've been on the road," she explained. "Between shooting Vampire Diaries, I've been touring for my new single that just came out, 'Power.' So I've been doing all the different radio shows, so it's been hard to sit down and plan. I've been literally all over the place."

Graham did tell Us, however, that she had already started a new diet to get in shape. "I don't know if it's for the wedding, but I've gone on this whole organic kick," she shared. "I did a whole thing of blood tests and I have completely changed my diet. I eat a lot of steamed veggies, lean meats. I'm staying away from sugar. It's extremely hard, especially when you don't have a cheat day. My nutritionist has cut me off of bread. It's very hard and it makes you crazy!"

The hard work paid off and Graham said she was feeling good. "I don't really weigh myself, but I'm definitely more lean and I have more oxygen," she explained. "I don't need to take as big of breaths."

The CW star also told Us that she's not a bridezilla and isn't worried about picking out her wedding dress. "I know the shape I want, so that's easy," she said. "I can do that in a day!"