This is one mother-in-law you wouldn't want to get on the wrong side of.

Kelly Osbourne has taken the momentous step of introducing her man Luke Worrell to her mother Sharon.

But (luckily for him) it looks as if he went down well - after a lunch in Los Angeles the former X Factor judge was seen clutching his hand.

Mother's meeting: Kelly Osbourne introduces her new boyfriend Luke Worrell (wearing matching sunglasses with his girlfriend) to feisty mother Sharon in Beverly Hills

The trio went to The Ivy in Beverly Hills yesterday before heading to a Chanel boutique for a spot of shopping, with Kel and Luke wearing matching yellow and purple sunglasses.

Kelly, 23, has been dating 18-year-old model Luke since May, and has even dared to talk about marrying him.

She said last month: 'We get on so well together. I really do love him.

'Every time we are in each other's company, we always have a good time.

Getting along just fine: Luke Worrell cosies up to Sharon Osbourne

'Would I marry him? Yes, you never know. But I'm still really young, I'm only 23, so we'll have to wait and see.'

Well, if he sticks around after surviving meeting the formidable Sharon, she must be on to a winner.

Over the weekend, Kelly was all over Luke at the Glastonbury Festival in Somerset.

The former reality star admitted she was in low spirits following the death of family dog Minnie, who lived with Sharon and Ozzy at their Hollywood mansion.

Shop till you drop: The young couple go on a spending spree in the Chanel boutique in Beverly Hills