Say What is your guide into what has been happening in the world of celebrity on social media.

Blink and you'll miss a tweet.Scroll too fast and that all important selfie will never dazzle your eyes.

Don't panic, as we have this weekly guide on what your favourite celebrities have been up to on social media.

Here is what your favourite celebrities have been up to this week - and it seems they are either hitting the gym or on vay-cay (or holidays as we call it in the UK).

Motivation from Myleene

The rest of us have been feeling guilty about our Christmas splurge but not Myleene Klass who has been showing off her stunning bikini body on Instagram. The beauty has been posting pictures from her holiday - and we have to admit she has inspired us to hit the gym. Doesn't she look great?

Determined Usain

Superstar athlete Usain Bolt has been hitting the gym with the rest of us - we so have been working out! The star posted this picture saying, "New Year. Same Mission. Same Goals. #workneverstop #ForeverFaster #2015." We are feeling a bit like the guy behind him. Looking at this picture is just exhausting.

Rosie pack's a punch

Model Rosie Huntington-Whitely showed she is a force to be reckoned with in the gym. The beauty posted this picture on Instagram of herself packing a punch, and it looks like she has been getting some tips from action man boyfriend Jason Statham.

Vicky works out

Geordie Shore star Vicky Pattison shows that she has maintained her fabulous figure over the festive break - by posing in gym gear. The reality TV queen said: "New year... New gym gear!!! Please excuse my gormless expression...it's early." She has certainly inspired us to put the doughnut down and hit treadmill.

It's a scandal

It's not just us who have to go back to work after the festive break, it appears celebrities do too. Actress Kerry Washington posted this picture of the cast of Scandal doing a script read through. Washington plays Olivia Pope in the US drama. The show, which is currently in its fourth season, returned to Sky Living last night - are you a gladiator and were you watching?

Taking the mickey

Rapper Iggy Azalea showed off her Mickey Mouse inspired hat on Instagram. The star, who is rumoured to have collaborated with Britney Spears for the singer's next album, said: "Pom pom obsessed this winter." We have to admit we think the hat is cute, don't you?

Perfect Jonas

We just adore Nick Jonas these days, I mean how gorgeous is he? The star has been enjoying the festive break and posting lots of pictures on his Instagram. He said: "Perfect snowballs. Perfectly cold coors lights. Perfect nights. Perfect way to finish the holiday break. #2015" We think your just perfect Nick, don't we girls?

Jamie's discovery

Stop what you are doing everyone. It would seem Made in Chelsea's Jamie Laing has just discovered the selfie. The reality TV star posted this picture on his Instagram saying, "So this is what a selfie is?" Yes Jamie, you're so 2014!

Ellie in hair growth shocker

Gorgeous Ellie Goulding took to Instagram to let fans know her hair has grown. She said: "HAIR GROWTH YUS I bleached and obliterated my hair and now it groweth." OK Ellie, we have to admit we are more excited about your new song. The track Love Me Like You Do will feature in Fifty Shades of Grey movie. We just love this song, don't you?

Oh dear Millie!

Millie Mackintosh showed off an interesting look on Instagram. Mrs Professor Green accidentally fell asleep with sunglasses on. She said: "Note to self. Don't fall asleep with sun glasses on!" She still looks pretty perfect to us!