The first rule every young starlet is taught about being a celebrity is to avoid the VPL (Visible Panty Line) at all costs.

But it seems Coronation Street star Helen Flanagan may have forgotten her training, as she stepped out in Manchester today wearing a highly unflattering pair of leggings.

The 20-year-old actress had clearly dressed for the sunshine in a lacy cropped top, tight leggings and killer Christian Louboutin heels, but had forgotten to eradicate her VPL before she left the house.

Unflattering: Helen Flanagan's outfit choice did little to flatter her size-8 figure, and highlighted her VPL

Unfortunate: The young actress had clearly forgotten to check her rear view before she left the house

Blissfully unaware of her fashion faux pax, Helen smiled for photographers as she negotiated her way across the cobbled streets in the six-inch heels.

And it seems constantly wearing heels is taking its toll on Helen's feet, as the star appeared to have painful blisters on the back of her ankles.

But if she was uncomfortable, Helen didn't show it, as she made her way through Manchester carrying her favourite Chanel handbag.

Helen shot to fame playing Rosie Webster in Coronation Street, and has since secured herself a place in the WAG ranks by dating footballer Scott Sinclair.

Slimline: Helen bared her toned stomach in a lacy cropped top

And the actress says she is looking forward to her future on the soap, because she is set to become 'a lot nicer' following a series of storylines which saw her bring out her villainous side.

She said recently: 'I'm so excited. We've just got a new producer and he's absolutely lovely. I'm really excited about the storylines for my character.

'I can't let on, but I think you'll see a change for my character. I'm really happy because she's going to become a lot nicer and hopefully the audience will like her better, so that should be good.'

Louboutins: The actress wore killer Christian Louboutin heels for her day