Some women look tired and drawn while they are pregnant, while others literally glow.

Dannii Minogue is clearly one of the latter ladies, as she proved while on holiday with boyfriend Kris Smith.

The 38-year-old star, who is expecting her first child with Smith in July, looked happy and carefree in a loose animal-print top, black trousers and a white trilby hat during a trip to Cape Town, South Africa.

Mother-to-be: Dannii Minogue, who is nearly four months pregnant, shows off her baby bump in Cape Town

Dannii couldn't stop smiling as she toured Cape Town

Dannii is visiting the country to shoot her new advertising campaign for high street superstore Marks & Spencer, after being named their new poster girl.

On her Twitter feed, Dannii told fans: 'I'm so excited to be a Marks & Spencer girl.

'On the beach shooting your Spring campaign!'

Dannii will be joined by a fresh new line-up of stars including Brazilian supermodel Ana Beatriz Barros, singer V V Brown, presenter Lisa Snowdon and veteran M&S girl Twiggy in the new campaign that launches in March.

Former rugby player Smith places a protective arm around his pregnant girlfriend

Cravings? Dannii sucks a lollipop as she cradles her baby bump

Dannii recently told Piers Morgan in a TV interview that she only started feeling maternal after she started dating 31-year-old former rugby league player-turned-model Smith.

She said: ‘I’ve never been maternal. I almost thought I was going to escape it, and now I’m in a relationship that is just so right, maybe I have to think about it.'

The star married fellow Australian and Nip/Tuck star Julian McMahon in 1994 but they divorced the following year, which she described as her 'biggest regret and biggest downfall'.

In October 1999, she became engaged to French Canadian Formula One driver Jacques Villeneuve, but their relationship ended in 2001, and she also dated former Bros star Craig Logan in 2002.

But Dannii insists she has never been happier, and can't wait to start her family with Smith.

She said: 'My life has been turned upside down, inside out and everything. I mean, everything is fresh and new and exciting.

'Kris has changed everything. He's changed me and I just feel like the sun is shining every day. It's amazing.

'I found The One and I am exploding with happiness. Kris is so completely broody. I'm totally in a panic about everything - babies, living together and working miles apart. It all seems so complicated.

'But, hey, it's wonderful to have problems caused by being completely in love.'