She plays controlling parent Madeline Mackenzie in Big Little Lies.
And Reese Witherspoon, 43, oozed glamour in a satin purple dress at the Big Little Lies photocall in Los Angeles on Wednesday - after being hilariously teased on Instagram by HBO for being 'short' in reference to the new series.
The stunning actress, 43, looked as fabulous as ever in the bold frock which she paired with nude stilettos and sparkling earrings.
Sensational: Reese Witherspoon, 43, oozed glamour in a satin purple dress at the Big Little Lies photocall in Los Angeles on Wednesday
Wearing her blonde locks in a bob, the Hollywood star highlighted her incredible beauty with a smoky eye.
Reese later took to Instagram to share an adorable photo of her 12-year-old younger self, with the caption: 'Felt cute, will post 20 years later. #TBT #Freeway (1996!)'.
HBO hilariously took to the comments to tease the Hollywood star, writing: 'When Mary Louise calls you "short"' - in reference to an iconic line delivered by Meryl Streep in the first episode of the brand new series.
Reese's character was pitted up against straight-talking Mary Louise Wright (Meryl), who is a combination of the mother-in-law from hell, a nosy detective and a passive-aggressive tyrant.
'Short': HBO hilariously took to the comments to tease the Hollywood star, writing ' When Mary Louise calls you "short"' - in reference to an iconic line delivered by Meryl Streep in the first episode of the brand new series
Stunning: The Hollywood star wore her blonde locks in a bob with loose curls
The uncomfortable exchange saw Mary Louise throwing a slew of snide comments to Madeline with one being that 'short people are untrustworthy'.
The new series saw the introduction of Perry Wright's mother, Mary Louise, played by 69-year-old Meryl who has come to the town of Monterey to uncover the truth of her son's death after he was killed at the end of the first season.
As the first episode of the new series aired, Reese kept fans of the hit HBO show entertained as she live-tweeted throughout the season two premiere on Sunday evening.
Fabulous: The stunning actress, 43, looked as fabulous as ever in the bold frock which she paired with nude stilettos and sparkling earrings
In response to the 'short' comment, Reese took to Twitter to defend her character as well as to rally support around Madeline, which Big Little Lies fans found hysterical.
Reese shared the clip from the show, showing Meryl looking her up and down as she was told: 'You are very short.'
Alongside the footage, Reese typed: 'Hey @jaboukie ... shorties unite!! #BLL2.'
The star then uploaded anther meme depicting the moment Madeline told Mary Louise that she had been rude – only to then be subjected to more passive
