Blac Chyna is pregnant, but who exactly is 'Angela Kardashian'? (And why do the rest of the family not like her?)

We've answered all the questions you might be too embarrassed to ask right now.

There’s a new Kardashian baby on the way – congratulations to Rob and fiancée Blac Chyna, who announced that they are expecting their first child together this weekend.

However, it’s hard to ascertain just how happy the rest of the Kardashian family will be over the news, after their reaction to the engagement, and the their relationship in general.

Back in April we wrote: There has been unsual radio silence from the Kardashian camp over news that the dark horse of the family, Rob Kardashian, has proposed to his girlfriend Blac Chyna after a whirlwhind romance of two months.

On Tuesday Blac and Rob shared an Instagram shot of themselves sitting in a car grinning like a pair of Cheshire cats, Blac casually flashing a massive diamond engagement ring with the (very-subtle) caption, 'YES!'

Rumour has it, Blac is already planning to adopt the Kardashian name, with a source telling People magazine, 'She was more than excited, she was thrilled, just super happy. She’s soon to be Angela Kardashian. She’s ecstatic.'

But who exactly is Blac (or Angela), and why do the Kardashians really dislike her? Here's a run-down.

Blac Chyna is not her real name, right?

No her real name is Angela Renee White.

How is she famous?

Angela (who adopted the stage name Blac Chyna) was formerly a stripper who began urban modelling in 2010, making regular appearances in high profile rap and hip hop videos. Drake name-dropped her in his single 'Miss Me' and she played Nicki Minaj's stunt double in the music video for Kanye West's single Monster.

What else has she done?

With her celebrity on the rise - she won Model of the Year at the 2011 Urban Model Awards - Blac trained as a make-up artist and launched her own online fashion and beauty store '88fin', followed by a range of adhesive eyelashes called LASHED by Blac Chyna.

Why do the Kardashians not like her?

Well, Blac Chyna was previously engaged to Kylie Jenner's on-off boyfriend Tyga. In 2012 the pair had a child together called King Cairo Stevenson (understated), before breaking up in 2014. As a result, there's been plenty of not-so-subtle shade-throwing on social media between Blac and Kylie. Also, before her ex started dating her little sister, Kim and Blac Chyna were also very good friends. But now that news of the engagment has been announced, the Kardashians appear to have pulled a full 'media blackout' with not so much as a congratulatory tweet between them. Though they're currently holidaying in Colorado. Maybe there's just no signal...

Has anyone else said anything? Why am I even asking this?

Tyga has released a slightly backhanded series of tweets 'congratulating' the couple. 'Everybody deserves 2 be happy' he tweeted 'What some1 does for their happiness is not my concern, as long as it's not interfering wit my happiness [sic]' He added, 'it makes me happy to see the mother of my son happy. My only concern in this situation is my son. I want him in happy environments.'

We're guessing they're not planning a big family wedding, then...