If bride-to-be Keira Knightley** can't turn to Google in her hour of need, who can she depend on?

During a visit to Ellen on Thursday, Nov. 15, Knightley's host Ellen DeGeneres throws the engaged actress (who is set to wed musician James Righton) a "bridal tea party" -- prompting Knightley, 27, to open up about her wedding planning woes.

"The problem is, ever since [the engagement] happened, everyone keeps going . . . 'So when is it going to happen, and what's the dress like?'" the Anna Karenina star explained. "I'm just not one of those girls that's had the kind of fantasy wedding thing, so we haven't planned anything and it's all quite terrifying."

Continued Knightley, "I sort of looked up on the Internet . . . if you're getting married, what should you do . . ."

"You're looking on the Internet to see what you do?" DeGeneres asked.

"I really don't have a clue, I don't get what the big deal is," she confessed. "You say I do . . . You drink a bit . . . On the Internet they keep talking about . . . There are things like bridal tea parties. I mean, what is a bridal tea party? I've never had a tea party in my life."

"The whole thing is kind of quite confusing, I think," Knightley mused.

DeGeneres and Knightley also chatted about the Oscar nominated star's topless, Mario Testino-shot Allure cover for the mag's December issue.

"You look good. I know that sometimes you have not been happy with the way your breasts have appeared in certain things," the comedienne commented.

"Well, sometimes they make them a lot bigger than they actually are," Knightley replied. "I'm happy with them with the size they are. I'm all right with it unless they make them really droopy. Then, I kind of think, 'Okay, if you're going to invent that I have big t--ts, any way they could at least be perky ones?' It seems a little unfair to go from nothing to a big droop."

"So you're happy with this [cover] because this is you?" DeGeneres asked her guest.

"Well, I think that's me," the London native laughed. "There's not a lot of breast there, so I'm assuming that's me."

This article originally appeared on Usmagazine.com: Keira Knightley: Wedding Planning is "Quite Terrifying"