Why the long face? Jennifer Aniston grimaces as she checks out Jimmy Kimmel's fianceé's trim bikini body

Like all women it seems even Jennifer Aniston has the odd pang of body envy.
The 41-year-old was spotted pulling a face in an unguarded moment as she checked out her holiday companion's svelte bikini body.

Funny face: Jennifer Aniston expresses herself in a comical way as Molly McNearney walks past in Mexico

Girl time: The friends chat on the balcony

Golden girl: Jennifer Aniston showed off her curvy figure in a series of revealing bikinis on New Year's Eve, including this dark one

Jennifer pouted playfully as she checked out U.S. chat show host Jimmy Kimmel's beautiful fiancé Molly McNearney.

But clearly she has nothing to worry about as she unveiled her own trim figure, showing no sign of a rumoured baby bump.
Despite her grimace, Jennifer appears to be enjoying her sunshine break.
The actress and her fiance Justin Theroux are celebrating with Jimmy and 34-year-old Molly, along with British actress Emily Blunt and her husband John Krasinski.

Demure: Jennifer modestly covered up her lower half in a flowing sarong while walking around the balcony of her suite

Nothing to worry about: Jennifer looked trim in her bikini but opted for a cover up too

Perfect figure: Jimmy Kimmel's fiancée Molly McNearney shows off her trim bikini body

The former Friends star sizzled in a series of sexy bikinis while soaking up the sun in Los Cabos with her pals.
Jennifer, who jetted to Mexico with her cosy entourage on Sunday, spent the majority of the day on New Year's Eve on the balcony of her suite, having a wonderful time chatting.

Let's keep it brief: British actress Emily Blunt looked great in a mismatched bikini and sleeveless kaftan

Famous friends: Jennifer was joined by actress Emily Blunt and husband John Krasinski

At one point, the 41-year-old star paraded her figure in a black two-piece, which showed off her perfectly even tan, while her thick honey-blonde hair hung loose and wavy around her golden shoulders.
Jennifer modestly covered up with a flowing floral sarong as she glided about in front of her pals.
Also that day Jennifer was spotted wearing a eye-popping emerald green bikini while laying back in her lounge chair.

Fun crowd: Jennifer's pal Emily Blunt looks out at the horizon while Justin shows off her six pack abs

Nothing like a good book: Jennifer was also seen wearing an emerald green sexy two-piece number while lounging with some reading material

Pearls of wisdom: Jennifer opted out of the New Year's party crush for a relaxing time with her man and a book in Los Cabos

The Wanderlust star even attempted to read a paperbook book from her supine position.
At a different time in the day, the quick change artist changed into a purple bikini while hanging out the group.
Jennifer, who has been spending much of her time in New York these days, chose the perfect place as temperatures climbed to 77 degrees Fahrenheit at the resort, which is at the southern tip of the Baja California peninsula.

Chill out time: Justin seemed keen to get a tan as Jennifer got stuck into a good book

The entourage: Jennifer and Justin Theroux were joined on holiday by Emily Blunt and her husband John Krasinski, and Jimmy Kimmel and his fiancee Molly McNearney

Jennifer and Justin, 41, arrived by private jet on Sunday to the Baja California peninsula famed for its sandy beaches, world-class scuba diving, distinctive sea arch, and abundant marine life.
Flying down to Cabo for the holidays is a longheld tradition for the actress, who has previously treated her friends Chelsea Handler and Courteney Cox to the privilege.
Now that she's getting older, Jennifer is learning to relent a little on her strict eating habits, telling Britain's OK magazine in October: 'I stopped dieting when I figured out that you just have to eat regularly and properly within moderation.'

Jet set crowd: Jennifer and Justin arrived by private jet on Sunday to the Baja California peninsula famed for its sandy beaches