The 30-year-old actress's character Penny got married to long-term love Leonard (Johnny Galecki) in America last night...

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Ooh. We’re too excited by this Big Bang Theory news.

The first episode of season 10 aired in the States last night, and it made all Penny and Leonard fans weep with happiness.

See: Did Kaley Cuoco Just Hint That The Big Bang Theory Is Ending?

#bts #kaleyspolaroids #leonardandpenny 💗 @bigbangtheory_cbs

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Why’s this? Because they got married!

Okay, so we know that the couple already got hitched in Vegas. But now they’ve had a proper white wedding, with their families present. Aw.

We’ve seen some photos of the ceremony, and Penny (Kaley Cuoco) looks ah-mazing.

It's a family affair as The #BigBangTheory's Leonard and Penny tie the knot…again!

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She’s decked out in a lacy midi, which features Kate Middleton-style sleeves. When it comes to accessories, she’s rocking a floral headpiece and flats.

Meanwhile, Leonard (Johnny Galecki) is dapper in a beige suit.

Of course, the rest of the BBT gang were there to watch the vow renewal in action, including Sheldon (Jim Parsons), Howard (Simon Helberg) and Raj (Kunal Nayyar).

It looks as though Bernadette (Melissa Rauch) marries the pair, while Amy (Mayim Bialik) is in a lilac bridesmaid-style dress.

See: Kaley Cuoco Denies She’s Leaving The Big Bang Theory

But there are also some new faces… Penny’s mum and brother! While we’ve already been introduced to her dad Wyatt (Keith Carradine), we’ve never seen Susan or Randall.

Family fun #bts @bigbangtheory_cbs #polaroid photo cred @a.ayers10

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Randall is played by 30 Rock‘s Jack McBrayer, while Katey Sagal takes on the role of Susan. This is a particularly nice touch, considering Katey also played Kaley’s mother in 00s sitcom 8 Simple Rules.

This whole wedding storyline could’ve been a little awkward, considering Kaley, 30, and Johnny are actually real life exes.

They dated in the early days of BBT, but luckily, there’s no bad blood between them. In fact, they’re incredibly close.

Kaley Cuoco and Johnny Galecki

Kaley Cuoco and Johnny Galecki are still very close

Johnny, 41, has previously said: ‘She’s not an ex, she’s a part of my life.’

Cute! We just can’t wait until season 10 reaches UK screens.