Guy Ritchie and Jacqui Ainsley welcomed their first child Rafael together last year

Guy Ritchie's girlfriend Jacqui Ainsley sparked rumours that she's pregnant when she stepped out at the London premiere of The Dark Knight Rises last night.

The model, 30, was sporting a suspiciously round tummy at the event in Leicester Square.

Jacqui wore a loose black midi and placed a hand on what seemed to be a baby bump as she posed with Guy, 43, on the red carpet.

The couple are already parents to son Rafael, who was born last September.

Jacqui recently spoke of her desire to have another baby.

'I'd love more children. Guy and I have always wanted a big family. It's something we planned all along,' she told Grazia.

'This is the first time I've been a biological mother but we've got the two big boys and they absolutely dote on Raph. They're always dancing with him and wanting to play with him.'

UPDATE: A rep has now revealed Jacqui is pregnant.

'I can confirm the report is true that they are expecting their second child,' says the spokesperson.

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