The TOWIE star is fretting what they are getting up to on Mark Wright's stag

Jessica Wright isn’t bothered by her brother Mark Wright‘s antics on his Las Vegas stag do – admitting she is more concerned about what her grandad is getting up to!

The TOWIE star says: ‘I am worried about my grandad being out there. The thought of him doing shots and things. Thankfully he hasn’t been wearing Speedos around the pool like Mark. I’m sure in his heyday he would have been.’

But the 29-year-old admits she was left red-faced when she saw the pictures of her brother, who is marrying Michelle Keegan in less than two weeks, diving into a pool in a tiny thong.

She explains: ‘I don’t know what he was thinking with those pants. But I know on stags they dress the groom up and do stupid things so it’s not too bad. Thank goodness Bobby Norris didn’t lend him something or he could have been in a mankini.’

Mark has been enjoying an extravagant stag in Sin City with 38 of his friends.

The group, which also includes Mark’s brother Josh, cousin Elliott Wright and James ‘Arg’ Argent, have been hitting the pool parties as well as going to see Calvin Harris DJ.

TV presenter Mark and former Corrie star Michelle will exchange vows in front of 200 close friends and family at St John Lateran church in Suffolk before moving on to their reception at nearby Hengrave Hall.

Jess, who is one of Michelle’s seven bridesmaids, revealed they have been keeping her occupied while her fiancé is away.

She tells Now: ‘We’ve had quite a big girlie weekend to compensate for it. We’ve been out loads with Michelle. Not because they are there just because there’s a lot down from Manchester too. There has been so much banter flying back and forth between the guys and the girls about the trip. I just can’t wait for the wedding day now.’

Mark Wright and Michelle Keegan: A love story in pictures

Kelly Allen