The pair recently chatted to reporters, so read on to find out what they had to say about Brittana, Santana coming from the wrong side of the tracks, which Paris Hilton song Naya wants Heather to cover, and why that Britney Spears episode was so hard to film...
Your characters both really blossomed in season two. Did you have any idea of what was in store?
Heather: "Every episode was a big surprise for us."
Naya, you had a big storyline with Santana's sexuality. How did people respond to that?
Naya: "Very well. It's just been overwhelming because it's something that's so real to so many fans and just getting fan letters and meeting people - to be thanked for portraying something and doing something that you love every day is a really crazy feeling. It's cool and I feel a responsibility now to do a good job."
Are you hoping Santana's sexuality is explored more in the third season?
Naya: "I know that it will be. I know that [executive producer] Ryan [Murphy] said that no matter what they're going to stay true to her sexual orientation now and take it seriously. And he said that she will deal with it the way that Kurt dealt with his. So we'll see. But hopefully not too many more tears for her!"
Have you had a big reaction from girls going through the same thing as Santana?
Naya: "Yeah, tons. Tons. Every night on tour when I looked out I actually saw girls wearing 'Likes Girls' shirts or 'Lebanese' shirts. It's like, 'Wow, you're actually doing that'. I feel like we gave them an excuse to be who they are and be proud of that."
A lot of fans loved the Santana and Brittany storyline too - are you hoping for more of that?
Heather: "Yeah, sure. We enjoy it when we work together. When you're getting the material you're not thinking in the circumstances, 'What's this going to change?' You're just thinking in the moment and then later on you get the response. So it's like, 'Of course we're going to want to work with each other, because we have a good time'. But later on, that's when you hear about it, like how much people loved it, and you're like, 'Oh, okay!'"
Heather, you definitely get some of the best lines on the show. Who writes those?
Heather: "I think they like to each try their own most of the time, the writers. I'm stoked to know what the new writers are actually going to come up with. I think anybody can do it because you kind of just say what you want to happen in real life. Like, 'Dolphins are just gay sharks'. That's something you genuinely would just say because it's funny."
Do people think that you are that ditzy? Do they confuse you with Brittany?
Heather: "Yeah, of course. I am!"
Do you think she could be a secret genius?
Heather: "Probably. That's what I think, but I don't know. We'll see. I think so."
Heather: "She does!"
Naya: "They're really funny. I mean, I've fought everyone physically. And the funniest thing is I've never been in a real fight in real life."
Heather: "Which I'm hoping for."
Naya: "It's on my bucket list, to get in a real fight."
Heather: "I had some friends who got in a fight and I was p*ssed that she wasn't there."
Naya: "I was p*ssed! I was like, 'That was my chance! That was my chance for a real fight!'"
Did you have fun working with Britney Spears on her tribute episode?
Heather: "It was good. I think we both kind of got pressure that we didn't know would be there. The music video scene took place in one long day, so it was just like a really long day for us. And Naya had to encounter a swing that wouldn't swing right."
Naya: "Oh my God, that was the worst!"
Heather: "She couldn't swing on this damn swing."
Naya: "I was so upset. So upset."
Heather: "And she was wearing a white suit and they put her in leaves. They were like, 'Oh, go play in leaves in your white suit, but you can't get dirty'."
Naya: "'Do choreography on this swing...'"
Heather: "'... and then climb over a group of men."
Naya: "Oh my God. I was also just so out of it because Heather's such a fantastic dancer and we'd be going from her great dance, shooting that and her killing it, to me trying to swing on this swing and look sexy. I was like, 'I don't do this! I can't do this!'"
Heather: "She was so amazing though."
Are you ever tempted to go out in your Cheerios outfits?
Do you miss wearing them?
Naya: "I do. I wear less clothing [on the show] now!"
Heather: "She does."
Naya: "It's crazy."
Do you have any dream songs you'd like to perform?
Naya: "I don't have a dream song. I have artists I would really like to do. Maybe like Billie Holiday. Some Adele."
Heather: "I want her to sing 'Daydreamer' by Adele. I think I just decided that!"
Naya: "I want her to sing Paris Hilton - 'Stars Are Blind'."
Heather: "We need to get me to sing that song."
Naya: "She needs to do that song. On Fondue For Two."
Heather: "Because it's, like, so bad."
Naya: "That would be so funny."
Will we be seeing more Fondue For Two?
Heather: "We're hoping."
Naya: "I think so, for sure. Everyone's obsessed with Fondue For Two."
Heather: "I'm obsessed. It's the funniest thing. I like to improv and the words are kind of improv-y in a way, so it's more fun for me. I used to do that in my room anyway when I was younger, when I was like 12. You know, you interview your stuffed animal. Well, I did."
Will we be seeing more of her cat?
Heather: "More Lord Tubbington."
Naya: "He just got signed as a series regular. He won The Glee Project."
Would you like to see more of Santana and Brittany's home lives and families?
Heather: "Yeah, that's a good idea."
Naya: "That's the one thing that I'm looking forward to hopefully happening in the third season."
Heather: "Getting to know everybody's family, seeing their homes, like you saw Finn's and Quinn's."
Santana is from the wrong side of the tracks, isn't she?
Heather: "You know what it's called? Lima Heights Adjacent."
Naya: "Lima Heights Adjacent is where she's from."
Heather: "Apparently it's a bad part of town. I don't know."
Naya: "But the thing is, she also said her father's a doctor. So I don't know what she's lying about. I don't know if she's lying about her father being a doctor. I think she probably doesn't live in a bad neighbourhood - she just says that so that she can intimidate people. She probably really is a rich kid."
You both started out with comedic roles but your characters have had more dramatic moments recently. Do you prefer drama or comedy, or just like to mix it up?
Heather: "I prefer comedy more."
Naya: "I prefer comedy as well, but it was really cool to do some more dramatic things."
If you like comedy, it must be great working with Jane Lynch.
Heather: "She's all-round entertaining."
Naya: "And so sweet, so nice."
Heather: "I don't think so. I mean, I don't know. I talked to Ryan and I hope it happens more because I think they're great, but if it doesn't happen it doesn't happen. I think they're really, really simple and great together, but we'll see."
Brittany's quite a nice character - do you get a positive reaction when you're out and about, Heather?
Heather: "I get high fives!"
Santana could be a bit more problematic...
Naya: "People beat me up!"
Heather: "Genuinely, she has scars all over her entire body."
Naya: "Someone tried to hit me with a car, it's been insane! No, no, no, no. No-one is ever mean to me at all. No-one's even ever said, 'Hey, what's with Santana?' No-one's ever even questioned me about anything. Maybe they're just afraid - maybe they're afraid of me!"
Heather: "People that are die-hard fans that we see that want to talk to us are probably people who look us up or know a little bit more about us. They want to get to know us. People are interested in who Naya is, I think."
Do you think we'll see any more of Santana and Karofsky together?
Naya: "Probably not, because I know that they're not going to have her lie any more about being with boys."
Is she going to come out, or is she just not going to lie?
Naya: "I think she'll just deal with it and then eventually she'll come to a place where she is out. But I don't think she'll be using boys any more!"
What's been your favourite song to perform?
Heather: "I liked 'Landslide'."
Naya: "I liked 'Songbird'."
Heather: "That made me actually cry. So beautiful."
Naya: "I had never heard the song before and when they sent me the demo I was, like, literally weeping in my house. I was like, 'Oh, how am I going to record this? I'm going to cry'. But it was good."
Would you like to do more original songs?
Heather: "It's a little bit weird for us when they do original songs, because we only do songs by artists already, so it seems weird for us. But we dabbled with it, so..."
I loved 'Trouty Mouth'.
Heather: "Those are the good ones! 'My Cup' and 'Trouty Mouth'."
Naya: "The fake ones - the bad fake ones."
Heather: "The fake ones that we make up are the good ones that should be famous."
Naya: "Put them on the radio!"
Glee returns for its third season on September 20 on Fox in the US and on September 22 on Sky1 in the UK.