But what about celebrities? We round up some of the most high-profile mothers, from Adele and Lily Allen who chose to become mothers in their twenties, to Halle Berry and Nicole Kidman who are welcoming bundles of joy into their lives well into their forties...
Rebecca FergusonSinger and X-Factor finalist Rebecca, 27, became a mum at the tender age of 18 with ex-partner Karl Dures and has a daughter Lillie May, 10, and son Karl Jr, eight.
'Karl was my first love. It was a surprise when Lillie May came along and it was hard to deal with, but a lot of young girls are in that situation,’ she said of her first pregnancy. Rebecca has recently confirmed that she is now pregnant with her third child with her current partner, who has chosen to stay out of the limelight.
Lily AllenLily Allen, 28, first became a mother at 26 with Ethel, now two, and welcomed her second child with husband Sam Cooper in January 2013, Marnie (15 months).
The outspoken singer made her pop comeback last year after a three-year career break, telling a French radio station, ‘I thought I'd be a really happy mum just sitting at home, playing with my kids; that was my dream. I love my children, but I'm a very impatient, busy person naturally so two babies, neither of them can talk, it was quite boring!’
Megan FoxVoted the World’s Sexiest Woman on numerous occasions, actress and Transformers star Megan Fox, 27, became a mum in her mid-twenties with baby Noah (16 months).
Happy to settle down, she told a newspaper: ‘I love it. It’s what I’ve wanted to do since I was a little girl. I always wanted to mother things and I constantly had a doll I was taking care of. I don’t receive the same satisfaction from my career as I do from being a mother so I’m really happy.’ Megan recently gave birth to her second child with partner Brian Austin Green. Baby boy Bodhi, is now two months old.
Reese WitherspoonScreen siren Reese Witherspoon, 38, became a mother at the young age of 22 with Ava (now 14). She went on to have another child with husband Ryan Philippe – Deacon (10) – and has recently given birth to her third child with new talent agent husband Jim Toth, Tennessee (19 months).
She opened up to a glossy mag about the loneliness she felt having a baby so young, saying, ‘When I first had Ava, I couldn't afford [help]. And it was so hard. I was out in Los Angeles, living [away from my family]. I really didn't have any friends. And I had a baby. No one else who was 22 had a baby. I couldn't go out.’
Kristin CavallariFormer reality star, Kristin Cavallari, 27, is now awaiting the arrival of her second child with her partner, Chicago Bears quarterback, Jay Cutler, after giving birth to baby Camden in August 2012, aged 25.
She told a magazine that it all came earlier than she expected: ‘It’s so crazy to look at your life and see how far you’ve come…I always wanted kids, but I always thought I would have kids later on in life, maybe when I turn 30.’ On getting pregnant: ‘We left it up to fate. I knew there was a possibility, but I was really excited…Even if you are trying, just to see a positive result is shocking!’
Adele AdkinsGrammy and Oscar-winning songstress Adele, 25, gave birth to her baby boy Angelo James (18 months) at the height of her fame, aged 24. Keeping out of the limelight for now, she expressed her happiness in a rare tweet about her personal life, ‘Happy mamas day to all of us! This is my first one! Never been happier :) xx.’
Hilary DuffHilary Duff, 25, has put her Lizzie McGuire days behind her and alongside husband MikeComrie welcomed motherhood, aged 24, with baby boy Luca Cruz (two).
Speaking to a parenting website, she admitted being a young mother put her at odds with her friends of the same age, ‘I don’t have a lot of people my age who have babies. So I’m at a totally different spot than a lot of my friends…I don’t really know what the alternative is. I do have a lot of energy, I feel great, and I had a really easy pregnancy.’
Sienna MillerActress Sienna Miller, 32, put her successful career on hold to become a mother to baby Marlowe two years ago, with actor partner Tom Sturridge, four years her junior.
Clearly loving motherhood, she told a glossy magazine, ‘I have a wonderful life. I’m up every morning with a little baby. That gives you incredible perspective. It’s such a gift. And it’s grounding in a way you can’t describe. And going back to work is really exciting and fun.’
Beyoncé KnowlesGlobal superstar Beyoncé, 32, took a break from ‘running the world’ when pregnant with Blue Ivy, now two.
Despite being back at work, and just completing her Mrs Carter tour earlier this year, the singer wants a normal life for her tot, telling an American chat show, ‘I am very protective. I just want to make sure that she can have a healthy, safe, normal life…in the back of my mind, she’s my priority. And life is completely different now. I feel really, really just lucky that I can still do what I love, and now have a way bigger meaning. And that’s to be her mother.’
Kim KardashianOne of the most high-profile pregnancies of 2013, Kim Kardashian, 33, and fiancé Kanye West, welcomed baby girl North West to the world in June 2013 and is clearly loving motherhood, ‘It completely changed my life…you have a different set of proprieties …nothing matters except your brand new family.’
Rachel StevensEx S-Club 7 singer and Strictly Come Dancing starRachel Stevens, 36, first became a mother aged 32 with husband Alex Bourne, welcoming baby girl Amelie, now three. Their family has also just got bigger this month with the addition of baby Minnie Blossom, just born.
Rachel posted on Twitter: ‘We’re so happy that baby has arrived safely. Within minutes of meeting her we were totally smitten. Amelie is happy and ‘cited to have a little sister to play with and we can’t wait to introduce her to the whole family.’
Halle BerryOscar-winning actress Halle Berry, 47, is one of the high profile celebs who have become mothers later in life – in Halle’s case, aged 41, with Nahla (six) – and has just recently welcomed another bundle of joy into her life, Maceo (seven months).
Speaking of motherhood in her forties, she said, ‘I thought I was kind of past the point where this could be a reality for me. So, it’s been a big surprise and the most wonderful.’
Salma HayekSalma Hayek, 47, and her husband François-Henri Pinault welcomed Valentina, now six, when the actress was aged 41.
She has spoken of the benefits of motherhood later in life, saying, ‘It’s a little nerve-racking to wait that long, but it’s the best time...because you’ve done so many other things in your life. You just get it out of your system, and you can really relax into being a mother.... If you’re 23, you don’t know this because you think you have to do so many more things. But if you already did them, then you can really focus and enjoy every minute of it.’
Nicole KidmanNicole Kidman, 46, has spoken often of her 'rollercoaster ride with fertility' and despite adopting two children with ex-husband Tom Cruise, Isabella (21) and Connor (19), she successfully became pregnant with new husband Keith Urban, aged 40. The family now have two adorable girls Faith Margaret (three, born via surrogacy) and Sunday Rose (five, born naturally).
Speaking of Faith Margaret’s birth, she said, 'She [the surrogate] was the most wonderful woman to do this for us…I get emotional talking about it because I'm so grateful to her.’
Mariah CareyMariah Carey, 44, did not believe she would become a mother, but now is over the moon to have her baby twins Monroe and Moroccan, aged two, in her and husband Nick Carter’s life.
However, she admitted on a US talk show that this would be it for the family. She said: 'I had a difficult pregnancy and was alone most of the time. ..we love Nick, but he was working! He's the hardest working man in show business.' On not having any more children: ‘I had pre-eclampsia, I had gestational diabetes.’